no 



GENERA AND SPECIES. 



Aplysia. (APLYSIID^E.) Plate xxx. 



577. pnnctatii, 



578. depilans, 



579. melanopus, 



if in. mouth with the dorsal margin gently curved. 



2 in. mouth with the dorsal margin boldly 

 rounded. 



2 in. semi-oval, with faint lines diverging from 

 the straight margin. 



Aporrhais. (APORRFIAID&.) Plate xxv. 



455- pes-pelecani, if in. whorls 12, angulated ; the three processes 



of outer lip digitated. 



456. macandrca, i in. whorls 7 or 8, not angulated ; the four pro- 



cesses of outer lip narrow and spiked. 

 Of 455 there is a variety albida which is whitish in colour. 



Area. (ARCAD/E.) Plate i. 



ii.pectiinculoides,m. x |in. posterior end broad, teeth seven or eight. 

 15. nodulosa, in x ^ in. teeth less than ten, and oblique. 



12. obliqua, m - x T m - teeth less than twenty, and in two rows. 



13. lactca, in x ^ in. teeth less than thirty-five, and in one row. 



14. tetragona, i in. x in. teeth over forty. 



Arion. (LIMACID&.) Plate xviii. 



241. ater, 4 in. shell consisting of loosely aggregated cal- 



careous granules, tentacles black. 



242. bonrguignati, Jin. animal whitish grey, with lateral stripes. 



243 flavus, i in. shell white, opaque, wrinkled ; .animal pale 



grey, tentacles dark grey. 



244. hortensis, i^ in. shell granular, in an oval mass; animal with 



grey stripes. 



245. sub-fascus, J in. shell of isolated calcareous granules ; animal 



reddish, with two black stripes. 



Of 241 there are several varieties, such as aU> alette rail s l which is dark brown with white 

 sides; bicolor, which i> dark brown with yellowish sides ; drapantaudi, which is dark 

 red ; ma.rgina.ta, which is black with a yellow or grey fringe to the foot ; nigrescens, which 

 is blackish with a red fringe to the foot ; pallescens, which is dirty white ; reticulata, which 

 is reticulated with pale yellow and grey ; rufa, which is red or brown ; and sitccinea, which 

 is arnber coloured. 



Of 244 there are three varieties, grisca, which is grey ; fasciata, which is grey, with 

 black bands ; and rufescens, which is reddish, with black bands. 



Of 245 there is a variety aurantiaca which is bright orange. 



Assiminea. (ASSIMINEID^E.) Plate xxiv. 



432. grayana, if in. x ^ in. whorls 7, suture shallow. 



433. littorina, T x ff in. x T \ in. whorls 4, suture deep. 



Astarte. (ASTARTID&.) Plate v. 



50. sulcata, i in. x i^ in. shell ribbed, obtusely triangular. 



51. compressa, J in. x in. shell ribbed, acutely triangular. 



