[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.]