[16] _Triopa clavigera._
[17] _Doris tuberculata_, which the reader will see figured in Plate
IV., in the centre of the foreground.
[18] _Eolis coronata_, figured in the upper part of Plate IV., above
the Sea Lemon.
[19] Both these are depicted in Plate IV. That on the right of the
picture is the spawn of _Doris tuberculata_; that on the left is the
spawn of _Eolis coronata_.
[20] Alder and Hancock (DORIS).
[21] _Purpura lapillus_, sometimes known as the Dog-winkle. Three
individuals, representing the varieties of colour, are seen in the
middle of Plate V., and a cluster of their egg-capsules in the lower
left corner.
[22] See _Devonshire Coast_, p. 60.
[23] _Trans. Micr. Soc._ (Ser. II.), vol. iii. p. 17.
[24] _Patella vulgata_, represented by two examples in Plate V., at the
left side of the picture.
[25] _Emarginula reticulata_, of which a figure appears in the
right-hand corner of Plate V.
[26] _Fissurella reticulata._
[27] _Pholas dactylus_; the principal figure in Plate VI., represented
as exposed in its burrow by the splitting off of a portion of the
limestone rock.
[28] _Zoologist_, p. 7819.
[29] _Nat. Hist. of Brighton_, p. 185.
[30] _Zoologist_, p. 6541.
[31] _Saxicava rugosa_; represented by the smaller figure in Plate VI.