Testa cochleata, lævis. Apertura subrotunda segmento circuli exempto.
Except _scarabæus_ and _amarula_, the members of this genus were
located in the same group as in the published edition.
H. SCARABÆUS. _Morion_ ovatus subanceps, labio utroque tridentato.
The "ovata, adeo" has replaced the earlier "ita", and "angulata" the
original "articulata". The account of the aperture was not inserted in
the manuscript, wherein "List. Hist. 577. f. 31" and "Klein 11. t. 1.
f. 23", had been inserted in the Linnean handwriting.
H. LAPICIDA. _H._ marginata perforata convexa carinata.
"Cincta" was a press emendation. The only written synonym was "Faun.
Suec. 1298".
H. OCULUS-CAPRI. _H._ marginata perforata subcarinata.
"Pet Gaz. t. 76. f. 6." was indicated as a synonym. The name was
Latinized from the "_l'oeil de bouc_" of d'Argenville who has,
however, represented an utterly different shell.
H. CAROCOLLA. _H._ submarginata imperforata carinata, labio interiore
recto.
D'Argenville's figure was, evidently, not at first considered
sufficiently illustrative to be referred to: it was not cited in the
written copy. "Conicoplaniuscula" was the reading for "convexa",
"segmento circuli" (the 1/4 without any sequence was absurd) for
"semiovata": the size, as usual, was not given.
H. CORNU-MILITARE. _H._ marginata imperforata subcarinata, labio
interiore explanato.
The deceptive figure of Gualtieri was not at first cited.
H. CORNEA. _H._ marginata convexa umbilicata, spira plana.
"Faun. Suec. 1304" was in place of the reference to 'Lister's English
Conchology,' a work apparently unknown to our author when he first
drew up the Museum Catalogue. I doubt the identity of this shell (the
intended name for which was _tabellaris_) with the cornea of the
'Systema.'
H. CORNU-ARIETIS. _H._ utrinque depressa.
"List. Hist. t. 136. f. 40" was written by our author in the
manuscript copy.
H. AMPULLACEA. _H._ subrotunda, sursum ventricosior glabra.
The original reading of "anfractus superne ventricosi" was "abdomen
superne ventricosius". The erroneous reference to Gaultieri was not
at first attached to the description. The species of the Museum was
evidently distinct from that of the 'Systema.'
H. GLAUCA. _H._ subrotunda acuminata, labro postice marginato.
H. CITRINA. _H._ umbilicata convexa obtusa.
The final remark was an afterthought.
H. ARBUSTORUM. _H._ marginata perforata convexo-acuminata, ore
suborbiculari, margine duplici, antice elongato.
"Faun. Suec. 1295" was the only synonym; the work of Lister on English
Conchology not having been at first known to Linnæus.
H. UNGULINA. _H._ marginata perforata spiralis convexa, ore
suborbiculato.