_Alderi_, _glaucina_, etc.--Brit. co. generally, 4 to 90 fath., C. Oblique,
marked with undulating lines.
17. N. MONILIFERA, _Lamk._--_Nerita glaucina_, _catena_, etc.--Near
water-mark, in sandy places generally, C. Whorls rounded.
18. N. SORDIDA, _Phil._--_N. fulva_, _plumbea_, etc.--Scilly, Cape Clear,
Zetland, etc., 25 to 90 fath., R.
19. N. PUSILLA, _Say._--_N. Groenlandica_, _livida_,
_alba_.--Northumberland, Yorkshire, N. Eu., 45 fath., R. White; umbilicus
small.
RECLUZIA.
20. R. APERTA, _Jeffreys._--_Natica aperta_, Lovén?--Zetland, Rr.
VELUTINA.
21. N. LÆVIGATA, _Linn._ (_Helix._)--_Bulla_, _Velutina_, etc.--Brit. co.
generally, 1 to 30 fath., N. Eu., C.
22. N. FLEXILIS, _Mont._ (_Bulla._)--_Coriocella_ and _Sigaretus
plicatilis_.--N. Scot., 25 fath., Rr.
LAMELLARIA.
23. L. PERSPICUA, _Linn._--_Helix_, _Bulla haliotoidea_, _Sigareta_ and
_Coriocella neritoideus_.--Brit. co. generally, but R.; 1 to 15 fath., Mr.
Thin, glassy, more ventricose than _L. tentaculata_.
24. L. TENTACULATA, _Mont._--_Sig._ and _Cor._--Falmouth, Swansea, Arran,
etc. Laminarian, Mr. Upper whorls less full than _L. perspicua_.
OTINA.
25. O. OTIS, _Turt._ (_Helix._)--_Velutina_, _Galericulum ovatum_.--Wales,
Devon, Channel Isls., Clare, etc., Mc. Littoral.
TRICHOTROPIS.
26. T. BOREALIS, _Broderip and Sowb._--_T._ and _Murex carinatus_,
_umbilicatus_, _acuminatus_, etc.--N. Scotland, W. Ireland, 15 to 80 fath.,
R.
[Illustration: BRITISH SHELLS. PLATE XVII.]
PLATE XVII.
ODOSTOMIA.
Fig.
1. O. UNIDENTATA, _Mont._ (_Turbo._)--_Voluta u._, _O. plicata_.--Brit.
co. generally, Mc. Rather conical. Tooth strong; no epidermis.
2. O. TURRITA, _Hanley_, _Brit. Mar. Conch._--_O. unidentata_, var. B.
M.--R. More lengthened than No. 1.
3, 4. O. ACUTA, _Jeffreys._--Torbay, Loch Fyne, Galway, etc., Mc. Strong,
conical. Suture deep.
5. O. PLICATA, _Mont._ (_Turbo._)--_Voluta p._, _V. plicatula_, _O. Annæ_,
_Jaminia p._, etc., Mc.--Salcombe, Swansea, Dublin, Aberdeen, Mc. Turreted.
Narrow, thin.
6. O. INSCULPTA, _Mont._ (_Turbo._)--_Voluta_, _Jaminia_, and _O.
ins._--S. Devon, Oban, Hebrides, etc., R. Conical, spirally striated.
7. O. PALLIDA, _Mont._ (_Turbo._)--_Vol._, _Cingula_, _Phasianella p._,
_O. ambigua_.--S. Devon, Rr. Broad. Thin, pillar straight.
8. O. CONOIDEA, _Brock._--_Turbo_, _Odost._, etc.--N. Scotland, Mc. S.
Devon, Mr. N. and S. Eu. White. Whorls straight; throat striated.
9. O. CONSPICUA, _Alder._--Isl. Man, Whitburn, Herm. Coloured. Whorls
rounded; throat striated.
10. O. TRUNCATULA, _Jeffreys._--Plymouth. Elongated.
11. O. CYLINDRICA, _Alder._--_Turbo nivosus_?--S. Devon, Ilfracombe,
Guernsey, Cork, R. Cylindrical, few whorls.
12, 13. O. EULIMOIDES, _Hanley._--_O. crassa_, _O. pallida_ (var. f. 13),
_O. notata._--Brit. co. generally. Coralline zone, Mr. Ample body-whorl.
14. O. DUBIA, _Jeffr._--S. Devon, Lerwick, Guernsey, Mr. Rather large
body-whorl.
15, 16. O. ALBA, _Jeffreys_, (and var.)--Swansea, Skye, Zetland, Guernsey,
Mr. Thin, whorls rounded.
17. O. NITIDA, _Alder._--S. Devon. Littoral, Mc. Aperture differently
formed from No. 17.
18. O. LUKISII, _Jeffreys_, _Ann. Nat. Hist. 1859._--Guernsey. Sublittoral
and coralline, Mc. Whorls tumid; a slight umbilicus.
19. O. GLABRATA, _Muhlfeldt_, (_Helix._)--_Rissoa punctulum_,
etc.--Zetland, R. Pillar-lip thin, arched.
20. O. RISSOIDES, _Hanley._--_O. scalaris._--Channel Isls., Devon,
Cornwall, Tenby, etc., Mc. Thin, conical, no umbilicus.
21. O. ALBELLA, _Lovén._--_O. rissoides_, var., B. M.--Guernsey, S. Devon,
etc. Turreted, upper whorls more cylindrical than No. 20.
22. O. OBLIQUA, _Alder._--Tynemouth, Guernsey, 7 fath. to deep water, Rr.
Thin, oblique.
23. O. DIAPHANA, _Jeffr._ _Ann. Nat. Hist. New Ser. vol._ ii. _p._ 341.--R.
Manifestly distinct from No. 22.
24. O. STRIALATA, _Alder._--Northumberland, Rr. Conical, striated.
25. O. MINIMA, _Jeffreys_, _Ann. Nat. Hist. Jan. 1, 1858._
26. O. INTERSTINCTA, _Mont._ (_Turbo._)--_T._, _O._, _Voluta_, and _Jaminia
canaliculata_, _oblonga_, and _obtusa_.--Brit. co. generally. Shallow
water, C. With longitudinal ribs.
27. O. DOLIOLIFORMIS, _Jeffr._--Scarborough, Exmouth, Swansea, Tenby, Rr.,
Scotland. Oval, body-whorl very tumid.
28. O. WARRENII, _Thompson_, (_Rissoa_.)--_Turbonilla_ and _O. obliqua_,
_O. decorata_.--Dublin, S. Devon, W. Scotland, R. Turreted. Mouth oblique;
an umbilicus; no fold or columella.
29. O. SPIRIALIS, _Mont._ (_Turbo._)--_Voluta_ and _Rissoa s._,
_pellucida_, and _plicatula_.--Brit. co. generally, not deep, Mc. Whorls
ribbed longitudinally above, spirally beneath.
30. O. DECUSSATA, _Mont._ (_Turbo._)--_T. Helix_, _Rissoa_ and _O.
arenaria_, _pellucida_?, and _d._--Exmouth, Lerwick, etc., R. Ribbed and
spirally striated.
31. O. EXCAVATA, _Phil._ (_Rissoa_.)--_R._, _O._, and _Cingula Harveyi_ and
_Deshayesiana_.--Dublin, Arran, Guernsey, R. Largely sculptured.
[Illustration: BRITISH SHELLS. PLATE XVIII.]
PLATE XVIII.
TRITON.
Fig.
1. T. CUTACEUS, _Linn._--Channel Isls., Rr. as Brit. Mr. Lukis's specimen
taken living off Guernsey.
2. T. NODIFERUS, _Lamk._--Guernsey; three living specimens, one incrusted
with _Lepralia coccinea_ (truly British). Mr. Jeffrey's specimen reduced.
MUREX.
3. M. ERINACEUS, _Linn._--_Purpura scalata_, var. _M. Tarentinus_.--Brit.
co. generally; 5 to 30 fath., C. N. and S. Eu.
4. M. CORALLINUS, _Scacchi._--_Fusus_ and _M. lavatus_, _inconspicuus_,
_gyrinus_, and _badius_?--Channel Isls. and S. Eu., C.
M. RUDIS. See _Trophon_.
PURPURA.
5. P. LAPILLUS, _Linn._ (_Buccinum._)--_B._ and _P. filosum_,
_imbricatum_, and _bizonalis_.--In crevices on shores, Brit. co. generally,
N. and S. Eu., C.
LACHESIS.
6. L. MINIMA, _Mont._ (_Buccinum_.)--_B. brunneum_, _B. rubrum_, _Nesæa
granulata_, _mamillata_, _Fusus minimus_, etc.--Channel Isls. and S. Brit.,
on shores. S. Eu.
BUCCINUM.
7. B. HOLBOLLII.--_Mangelia H._--Cornwall, Rr.
8. B. UNDATUM, _Linn._--_B. striatum_, _anglicanum_, _pyramidale_,
_imperiale_, etc.--Brit. co. generally, shores, Cc. N. Eu. and Am.
9. B. ACUMINATUM, _Brod._--_B. undatum_ var., B. M.--Rr.
10. B. CILIATUM, _Fabr._ (_Tritonium._)--Shetland, deep water, R. More thin
than No. 9; with striæ finer, and hairs of epidermis tufted minutely.
11. B. FUSIFORME, _Brod._--Cork, Wexford, Rr. Turreted, fusiform, white,
ribbed, striated.
12. B. DALEI, _Sowerby._--_B. ovum_, _Halia Flemingiana_.--Torbay,
Northumberland, Aberdeen, etc., R. Ventricose.
13. B. HUMPHREYSIANUM, _Bennett._--_Tritonium H._--Cork, Skye, Bantry Bay,
R. Light, smooth.
FUSUS.
14. F. BERNICIENSIS, _King._--Northumberland, Rr. Carinated, with open pink
mouth.
15. F. NORVEGICUS, _Chemn._ (_Strombus._)--_Tritonium n._--Scarborough,
Durham, Rr. Oval, smooth, with large aperture.
16. F. ANTIQUUS, _Linn._ (_Murex._)--_M._, _B._, and _Tritonium despectus_,
_contrarius_, _carinatus_, _babylonicus_, etc.--Various Brit. co., 5 to 30
fath., C.
17. F. ISLANDICUS, _Chemn._--_Murex corneus_, _Tritonium gracile_,
etc.--Brit. co. generally; 5 to 80 fath.; N. Eu., C. (See _F. propinquus_.)
18. F. TURTONI, _Bean._--Yorkshire, Northumberland, 60 fath., Rr.
19. F. PROPINQUUS, _Alder._--_F. corneus_ and _islandicus_, var.--N.
Scotland, Bantry Bay, Northumberland, deep water, Mr. Shorter than _F.
islandicus_, with deep suture and symmetrical spire.
TROPHON.
20. T. RUDIS, _Phil._ (_Fusus._)--_Murex r._, Jeffreys.--Tenby; unique as
British. Whorls and ribs rounded.
21. T. MURICATUS, _Mont._--_Fusus_ and _Murex m._--Brit. co. generally,
Channel Isls., 15 to 50 fath., Mr. Whorls angular, ribs intersected.
22. T. SCALARIFORMIS, _Gould._--Belfast, in sand, Rr. Ribs smooth.
23. T. CLATHRATUS, _Linn._ (_Murex._)--_Tritonium_, _Fusus_, and
_Pleurotoma Bamfius_.--Irish sea, Zetland, Mc. Ribs laminated.
24. T. BARVICENSIS, _Johnston._--_Fusus_ and _Tritonium b._--Hebrides,
Cork, Northumberland, 60 fath., Mr. Ribs aculeated.
[Illustration: BRITISH SHELLS. PLATE XIX.]
PLATE XIX.
NASSA.
Fig.
1. N. RETICULATA, _Linn._ (_Buccinum._)--_N. pullus_, _Tritonium
r._--Brit. and Eu. co. generally. Littoral, Cc.
2. N. INCRASSATA, _Müller_, (_Buccinum._)--_N._ and _B. minutum_,
_macula_, _asperulum_, etc.--Brit. shores generally, 0 to 50 fath., gravel,
C.
3. N. PYGMÆA, _Lamk._ (_Ranella._)--_B. tuberculatum_, _Tritonia
varicosa_, etc.--S. Brit. co., S. Eu., 4 fath. to deep water, C. Small,
with white varices on the body.
MANGELIA.
4. M. TURRICULATA, _Mont._ (_Murex._)--_Bela_, _Fusus_, and _Pleurotoma
angulatus_, etc.--Brit. co. generally, 3 to 100 fath., N. Eu., C. Whorls
flat above.
5. M. TREVELLIANA, _Turt._--_Pleurotoma_, _Bela_, and _M. reticulata_,
_decussata_, and _leucostoma_.--Northumberland, Aberdeen, Zetland, etc., 15
to 40 fath., R. Whorls with angular slope above.
6. M. RUFA, _Mont._ (_Murex._)--_F._, _M._, and _B. chordula_, _Ulideana_
(var.), etc.--Brit. co. generally, Mc.
7. M. TERES, _Forbes_, (_Pleurotoma._)--_P. boreale._--Various loc., 15 to
50 fath. S. Eu., Mr. Carinated, aperture deeply notched.
8. M. PURPUREA, _Mont._ (_Murex._)--_Fusus_ and _Pleu. p._, _Philberti
versicolor_ and _variegatum_.--Brit. co. gen., 3 to 60 fath., C. S. Eu.
9. M. CANCELLATA, _Sowerby_ (_Fusus._)--_M. purpurea_ var., _F.
asperrimus_,--Cornwall, Cork, R. Sharply sculptured.
10. M. RETICULATUM, _Brown_, (_Pleurotoma._)--_M. cancellata_
var.--Shetland, Guernsey, Rr. Sculpture between 8 and 9; inner lip not
thickened.
11. M. LEUFROYI, _Michaud_, (_Pleurotoma._)--_P._, _F._, and _M. inflata_,
_Boothii_.--Arran, Orkneys, Guernsey, etc.; S. Eu., 5 to 50 fath., Mc.
12. M. LINEARIS, _Mont._ (_Murex._)--_M._, _Pl._, _Fus. elegans_,
_concinna_, etc.--Brit. co. generally, sand and shells, 1 to 80 fath., C.
13. M. SCABRA, _Jeffreys_, (_Pleur._)--_M. linearis_ var.--Guernsey,
Plymouth, R.
14. M. NEBULA, _Mont._ (_Murex._)--_M._, _P._, and _F. Bertrandi_,
_varians_, and _pyramidatus_.--Various places and depths, N. and S. Eu., C.
15. M. LÆVIGATA, _Phil._ (_Pleu._)--_M. nebula_ var.--South Brit., S. Eu.
Small, fusiform, shiny, banded.
16. M. GUINNIANA, _Phil._ (_Pleu._)--_M. nebula_ var.--Tenby, etc., Mr. S.
Eu. Whorls longer than No. 14.
17. M. BRACHYSTOMA, _Phil._ (_Pleu._)--_M. tiarula_ and _Clavatula
b._--Brit. co. gen., Mr. Turreted; ribs crossed by raised lines.
18. M. NANA, _Lovén_, (_Tritonium._)--_Fusus albus._--Lerwick, Zetland,
Orkneys, etc., 45 fath., and deep, R. Ventricose, cancellated.
19, 20. M. STRIOLATA, _Scacchi_, (_Pleu._)--_P._ and _Murex Smithii_,
_Farranti_.--S. Devon, Clyde, Guernsey, Bantry, etc., Medit., R. as Brit.
Ribs angularly curved above.
21, 22. M. COSTATA, _Pennant_, (_Murex._)--_Buccinum_, _Fusus_, _Pl. c._,
etc.; var. f. 22, _M. Metcalfei_.--Brit co. generally, 5 to 50 fath., N.
and S. Eu., C. Body-whorl larger than No. 24.
23. M. COARCTATA, _Forbes._--_Pl._, _M. costata_ var., B. M.--Distribution
as 21 and 22; not so common.
24. M. SEPTANGULARIS, _Mont._ (_Murex._)--_M._, _F._, and _Pl. costatus_,
_heptagona_, etc.--Torbay, Bristol Channel, Forth, Galway, 5 to 30 fath.,
Mc.
25. M. ATTENUATA, _Mont._ (_Murex._)--_M. aciculatus_, _Pl. gracilis_,
_Villiersii_, etc.--S. Devon, Oban, Hebrides, Cork, etc., Mr. S. Eu.
26. M. GRACILIS, _Mont._ (_Murex_)--_M. emarginatus_, _suturalis_,
_elegans_, etc., S. Brit., Galway, S. Eu., Mr.
M. HOLBOLLII. See _Buccinum_.
ERATO.
27. E. LÆVIS, _Donovan_, (_Voluta._)--_E._, _Marginella_, _Bulla_,
_Volvaria_, and _Columbella fusiformis_, _Cypræola_, _Donovani_,
_Muscaria_, etc.--Brit. co. generally, 1 to 50 fath., Mc.
CYPRÆA.
28. C. EUROPÆA, _Mont._--_Cypr._ and _Trivia_, _Pediculus arctica_,
_bullata_, and _diaphana_.--Brit. co. generally, 0 to 50 fath., C.
[Illustration: BRITISH SHELLS. PLATE XX.]
PLATE XX.
TORNATELLA.
Fig.
1. T. FASCIATA, _Lamk._--_Voluta tornatilis_, Linn., _Bulimus T._, _T.
pellucida_ and _pusilla_ (young).--Brit. co. generally. N. and S. Eu.
OVULA.
2. O. PATULA, _Penn._ (_Bulla_).--Exmouth, Arran, etc., 20 fath. S. Eu.
Wide aperture, Mc.
3. O. ACUMINATA, _Brug._--_Bulla_ and _Volvula a._--Loch Fyne, Lamlash,
Galway, etc., R. S. Eu. Narrow, pointed.
CYLICHNA.
4. C. CYLINDRACEA, _Penn._ (_Bulla._)--_Bullina_ and _Volvaria c._,
_oliva_, and _umbilicata_.--Brit. co. generally, C. N. and S. Eu.
5. C. OBTUSA, _Montagu_ (_Bulla_).--_Utriculus_, _B._ and _C.
Jerviscensis_ and _discors_.--Brit. co. generally, C.
6. C. MAMILLATA, _Philippi._--_Bulla_ and _Tornatina m._ and
_truncatula_.--Exm., Skye, Galway, etc., Mc. S. Eu. Spire sunk, apex
mamillated.
7. C. TRUNCATA, _Adams_, (_Bulla._)--_B. truncatula_, _retusa_,
_semisulcata_.--Brit. co. generally, C. N. and S. Eu.
8. C. NITIDULA, _Lovén._--_C._ and _Bulla n._ and _umbilicata_.--Skye,
Loch Fyne, etc., R. N. Eu. Elongated, oval.
9. C. CONULUS, _Desh._--Zetland, Rr. Conical.
10. C. STRIGILLA, _Lovén._--_C._, _Bulla_, and _Atys s._ and
_ovulata_.--Scotland, Mr. Spirally striated.
11. C. UMBILICATA, _Mont._ (_Bulla_).--_Bullina_ and _Volvaria u._ and
_subcylindrica_.--Brit. co. gen., Mc. With umbilicated apex.
12, 13. C. LAJONKAIREANA, _Basterot_, (_Bulla._)--Guernsey, R. Narrower,
and with more raised spire than _C. obtusa_.
AMPHISPIRA.
14. A. HYALINA, _Turt._ (_Bulla._)--_A. diaphana_ and _Utriculus
pellucidus_, _minutus_, and _candidus_.--Scarborough, Weymouth, Cork, etc.
Littoral, Mc. N. Eu. Rather square.
15. A. GLOBOSA, _Jeffreys_, _Ann. Nat. Hist. Jan. 1859._--Skye.
AKERA.
16. A. BULLATA, _Müller._--_Bulla Akera_, _B. norvegica_, _B. resiliens_,
_fragilis_, _flexilis_, _Hanleyi_.--Southampton, Zetland, Galway, etc.
Littoral, Mc. N. and S. Eu.
BULLA.
17. B. CRANCHII, _Leach._--_B. punctura_ and _striata_.--Brit. co. gen.
Devon, Aberdeen, Cork, etc., 50 to 100 fath., Mr. Spirally puncto-striated.
18. B. CORNEA, _Lamk._--_B. hydatis_ (as of _Linn._), _B. navicula_, _B.
ampulla_, _Haminea hydatis_.--South Brit. co., 0 to 50 fath., C. S. Eu.
Broad, thin.
19. B. HYDATIS, _Linn._--_Haminea elegans._--Guernsey and Mediterranean.
Narrower and more solid than _B. cornea_.
PHILINE.
20. P. APERTA, _Linn._--_P. Bulla_, _Bullæa_, and _Lobaria a._,
_quadripartita_, _quadrilobata_, and _Planciana_.--Brit. co. gen., C. S.
Eu. Large, smooth.
21. P. SCABRA, _Müller._--_Bulla_ and _Scaphander scabra_, _pectinata_,
_dilatata_, and _catenulifera_.--Northumberland, Zetland, Ireland, etc.,
Mc., 5 to 50 fath. N. Eu. Oblong, serrated.
22. P. QUADRATA, _S. Wood._--_Bullæa_ and _P. scutulum_.--Zetland, etc., 10
to 100 fath., R. Striated.
23. P. CATENA, _Mont._--_Bulla_ and _Bullæa c._, _angustata_, and
_punctata_,--Brit. co. generally, Mr., 0 to 40 fath. With chain-like
sculpture.
24. P. PUNCTATA, _Clark._--_Bulla_ and _Bullæa_.--Devon, Swansea, Aberdeen,
Clare. In sand, 60 fath., Mc. With punctured sculpture.
25. P. PRUINOSA, _Clark._--_Bulla_ and _Bullæa_.--Devon, Northumb.,
Hebrides, etc. Mud, 20 to 70 fath. N. Eu.
SCAPHANDER.
26. S. LIGNARIUS, _Linn._ (_Bulla._)--_B. oblonga_.--Brit. co. generally. 1
to 50 fath. N. and S. Eu., C.
27. S. ZONATUS, _Turt._ (_Bulla_)--Young specimen taken at Zetland by Mr.
Jeffreys, resembling older Norwegian specimens. More oval than _S.
lignarius_. Spire umbilicated.
APLYSIA.
28. A. HYBRIDA, _Sowerby._--_Laplysia depilans_, _A. depilans_ and
_punctata_.--Brit. co. generally. Among seaweeds, 0 to 6 fath., C.
PLEUROBRANCHUS.
29. P. MEMBRANACEUS, _Mont._ (_Lamellaria._)--Devon, Arran, Cork, etc.
Low-water, Mr. Broad, flexible.
30. P. PLUMULA, _Mont._ (_Bulla._)--Guernsey, Devon, Skye, etc. Littoral,
R. Narrow, less flexible.
SPIRULA.
31. S. PERONII--Once taken near Swansea, imperfect.
[Illustration: BRITISH SHELLS. PLATE XXI.]
PLATE XXI.
LIMNÆUS. In and near fresh-water.
Fig.
1, 2. L. PEREGER, _Müller_ (_Buccinum._)--_Helix_, _Turbo_, _Bulimus_, and
_L. putris_, _inflata_, _teres_, _lutea_, _limosa_, _ovata_, _vulgaris_,
_marginata_, _intermedia_, _lacustris_, etc.--Springs and ponds, Cc.
3. L. STAGNALIS, _Linn._ (_Helix._)--_Buccinum_, _Turbo_, etc.,
_stagnalis_, _fragilis_, and _major_, etc.--Ponds, etc., not so generally
as No. 1, 2, C.
4. L. PALUSTRIS, _Müller_, (_Bucc._)--_Helix_ and _L. fragilis_,
_fontinalis_, _stagnalis_, etc.--Ditches, ponds, etc., C. Whorls more
numerous and less rapidly enlarged than No. 3.
5. L. AURICULARIUS, _Linn._ (_Helix._)--_L._, _Helix_, _Bucc._, _Turbo_,
_Bulimus a._, _patulus_, etc.--Near London, Swansea, etc., Mc. Aperture
very wide, and outer lip partially reflected.
6. L. ACUTUS, _Jeffreys._--_L. auricularius_, var. B. M.--Oban, Clumber
Lake, Bloomfield, Kent, R. Apex sharp and tapering; aperture smaller than
No. 5.
7. L. TRUNCATULUS, _Müller_, (_Bucc._)--_H._, _B._, and _L. truncatus_,
_fossarius_, _minutus_, _limosus_, etc.--Partly amphibious, generally
diffused, C. Small, spire equal to body.
8. L. GLABER, _Müller_, (_Buccinum._)--_H._, _B._, and _L. octanfracta_,
_peregrina_, _elongata_, _octona_, _leucostoma_, etc.--Fresh and brackish
marshes, Stafford, Somerset, York, etc., R. Spire longer than aperture.
9. L. INVOLUTUS, _Harvey._--_Amphipeplea i._--Lake near Killarney,
Belfast, Rr. Spire almost covered.
10. L. GLUTINOSUS, _Müller_, (_Buccinum._)--_Helix_, _Amphipeplea_, and
_L._--Windermere, etc., Mr. Oval.
11. L. BURNETTI, _Alder._--Lakes in Dumfries and Breconshire. Inflated;
spire flat; colour opaque-amber.
PHYSA. In and near fresh-water.
12. P. HYPNORUM, _Linn._ (_Bulla._)--_Helix_, _Physa_, _Limnæa_, and
_Aplexa turrita_ and _marmorata_. Pools and lakes, Brit. generally, C.
13. P. FONTINALIS, _Linn._ (_Bulla._)--_Turbo_, _Planorbis_, _Bulimus_, and
_Ph. adversus_, _bulla_, _bulloides_, and _fluviatilis_.--Brit. pools,
lakes, and ditches, C.
ANCYLUS. In fresh-water.
14, 15. A. FLUVIATILIS, _Müller._--_Patella lacustris._--Running streams,
on stones and plants generally, C. Oval, apex turned to left.
16, 17. A. OBLONGUS, _Lightfoot_, (_Patella._)--_A._ and _P. lacustris_.
More lacustrine than No. 14, Mc. Oblong, apex turned to right.
PLANORBIS. In fresh-water.
18. P. CORNEUS, _Linn._ (_Helix._)--_P._ and _H. cornu-arietis_,
_purpureus_, and _similis_, _P. nana_ (young).--Ponds and ditches
generally, C.
19. P. ALBUS, _Müller._--_Helix_ and _P. hispidus_,
_hirsutus_.--Distribution general, C. Finely ciliated in lines.
20. P. GLABER, _Jeffreys._--_P. lævis_, Alder.--Penzance, Falmouth,
Swansea, Belfast, etc., Mr.
21. P. NAUTILEUS, _Linn._ (_Helix._)--_P. imbricatus_, Müller; _P.
cristatus_, _Turbo nautileus_, etc., Mc. With horny ridges.
22. P. CONTORTUS, _Linn._ (_Helix._)--_P._and _H. crassa_,
_umbilicata_.--Distribution general, C. Numerous close whorls; aperture
semi-lunar.
23. P. CARINATUS, _Müller._--_Helix Planorbis_, Linn.; _P. planata_ and
_lutescens_.--Generally distr., C. Whorls more rapidly increased than No.
24; keel more distinct.
24. P. MARGINATUS, _Drap._--_H. Planorbis_, _H._, _P. limbata_,
_complanata_, _Draparnaldi turgidus_, _rhombeus_, etc.--Distr. gen., C.
Whorls more rhomboidal than 23.
25. P. VORTEX, _Linn._ (_Helix._)--_Pl. compressa_.--Distr. gen., C. Many
whorls, very compressed.
26. P. SPIRORBIS, _Linn._ (_Helix._)--_P. vortex_, var.--Distr. general, C.
Fewer whorls than No. 25; mouth not angular.
27. P. NITIDUS, _Müller._--_Helix_ and _P. fontanus_, _complanatus_, and
_lenticularis_.--Most parts of Brit., Mc. Very compressed.
28. P. LACUSTRIS, _Lightfoot._--_P. nitidus_, var., _Segmentina lineata_,
_P. nautileus_ and _clausulatus_.--Ponds and ditches near London, etc., Mc.
With internal divisions; lower disc flat.
[Illustration: BRITISH SHELLS. PLATE XXII.]
PLATE XXII.
SUCCINEA. Amphibious.
Fig.
1. S. PUTRIS, _Linn._ (_Helix._)--_H._, _S._, and _Limnæa Succinea_ and
_amphibia_.--On plants by the side of rivers, ditches, etc., C. Rather oval
in form.
2. S. GRACILIS, _Alder._--_S. putris_, var. _gracilis_, _S. amphibia_,
var. _Pfeifferi_.--By sides of streams and in damp meadows, C. Elongated,
with spire produced.
3. S. OBLONGA, _Drap._--_Helix elongata_, _Amphibulina o._ and
_e._--Swansea, Glasgow, etc. Sometimes at a distance from water, R. Spire
with more distinct whorls.
CONOVULUS. Partly marine, amphibious.
4. C. BIDENTATUS, _Mont._ (_Voluta._)--_C._, _N._, _Actæon_, and _Auricula
alba_ (var.) and _erosa_.--Salt-water marshes, and on rocks near high-water
mark all round our coasts, C. No tooth on outer lip.
5. C. MYSOTIS, _Drap._--_C. denticulatus_, var., etc.--Brackish marshes,
Thames, etc., C. Outer lip with one tooth.
6. C. DENTICULATUS, _Mont._ (_Voluta._)--_C._, _V._, _Auricula_, and
_Actæon ringens_, _reflexa_ (var. f. 7), _Mysotis_, and
_personata_.--Numerous places, near the sea, C. Outer lip with many teeth.
7. C. REFLEXUS.--_Auricula reflexa_, _C. denticulatus_, var. _Jeffreys_.
CARYCHIUM.
8. C. MINIMUM, _Müller._--_Turbo Carychium_, _Auricula minima_.--Moist
places, wet Mosses, etc. Generally distr., C.
LIMAX. Land Slug, with shell under shield.
9. L. CINEREUS _Müller._--_L. maximus_, _maculatus_, _Limacella parma_.
Brit. gen., C.; Eu. Shell oval, large, thin.
10. L. AGRESTIS, _Müller._--_L. concava_ and _obliquus_.--Brit, gen., C.
_Foss cr._ Shell small, oblique.
11. L. BRUNNEUS, _Drap._--_L. concava._--Under stones, etc. Shell minute,
square.
12. L. FLAVUS, _Linn._--_Limacella unguiculata_ and _variegata_.--The large
Cellar Slug. Shell thick, rather square.
TESTACELLA. Slug with shell on tail.
13. T. MAUGEI, _Férussac._--Clifton, Taunton, Plymouth, Swansea, etc., Mr.
Large, and more square than 14.
14. T. HALIOTOIDEA, _Drap._--_T. europæa_, _T. scutulum_.--Near London.
Channel Isls., etc., Mc.
VITRINA. Shell not including the whole Slug.
15. V. PELLUCIDA, _Müller_, (_Helix._)--_H. diaphana_, _Helicolimax_,
_Limacina major_, etc.--Various parts of the country, under stones, etc.,
Mc. Eu. Very transparent.
16. V. DRAPARNALDI, _Jeffreys._--_V. oblonga_, _H. brevipes_?--Less
globular than 15, R.
ZONITES. Transparent, thin-edged Snails.
17, 18. Z. CELLARIUS, _Müller_, (_Helix._)--_H._ and _Z. lucida_ and
_nitens_.--Brit. gen., C.
19, 20. Z. NITIDUS, _Müller_, (_Helix._)--_H._ and _Z. nitens_, _lucida_,
_tennis_, _Succinea_, etc.--Less depressed than 17, 18, with larger
umbilicus.
21. Z. CRYSTALLINUS, _Müller_, (_Helix._)--_H._, _Z._, _Discus_, and
_"Polita" c._, _eburnea_, _vitrea_.--In damp spots, among stones and Moss.
Minute, white, transparent.
22. Z. NITIDULUS, _Drap._--Generally distributed, Mc. Mouth oblique.
Umbilicus small.
23, 24. Z. ALLARIUS, _Miller_, (_Helix._)--_H._ and _Z. glabra_,
_alliacea_, _nitens_, _tenera_, _lurida_, etc.--Distr. gen., C. Smaller and
more convex than 17, 18.
25. Z. EXCAVATUS, _Bean_, (_Helix_)--_H._ and _G. nitida_, _lucida_,
etc.--Durham, Northumberland, Galway, etc., Mc. Umbilicus very large.
26, 27. Z. RADIATULUS, _Alder_, (_Helix._)--Distr. gen., C. Striated,
minute.
28, 29. Z. PURUS, _Alder_, (_Helix._)--_H._ and _Z. polita_, and _Helicella
nitidosa_, _electrina_, etc.--Most common North Engl. Whorls less close and
more oblique than 21.
[Illustration: BRITISH SHELLS. PLATE XXIII.]
PLATE XXIII.
HELIX. Snails with thickened lips.
Fig.
1. H. PISANA, _Müller._--_H. zonaria_, _cingenda_, _rhodostoma_,
_strigata_, _albella_.--Cornwall, S. Wales, Dublin, C. S. and N. Eu.