AUP ay SrA. 
Puate VIII. 

Species 55. (Fig. a, b, Mus. ?) (Copied.) 
Apzysia Ferrussact. <Apl. testd minutd, subrotundd, 
pallida, pellucida, subventricosa ; apice parvo, in- 
curvo; margine superiori brevi, excavato ; dorso 
tumido. 
Ferrussac’s APLYSIA. 
pale pellucid, subventricose ; 
curved; upper margin short, excavated; back 
tumid. 
Rana. Hist. Nat. des Aplys., p. 66, pl. 19, £ 8, 9. 
Shell minute, rather rounded, 
apex small, in- 

Species 54. (Fig. a, 6, Mus. Cuming in Brit.) 
Aptysia GRANDIS. Apl. testd subunguiformi obliqua, 
arcuatd, fusco-viridi corned, subpellucidd ; apice 
elevatissimo, acuminato, subauriculato ; 
superiort valde declivi, excavato ; labio externo 
rotundo ; margine mferiori rotundo ; margine 
dorsali convexo, subangulato. 
Tuer Larce Aptysia, Shell somewhat talon-shaped; 
margine 
oblique, arched, brownish green, subpellucid ; 
apex very elevated, acuminated, subauriculated ; 
upper margin much sloped, excavated, outer lip 
rounded ; lower margin rounded ; dorsal margin 
convex, subangulated. 
Pease. MS. Cuming’s cabinet. 
Hab. Shores of Pacific Islands. 
The shell of this species resembles that of Aplysia 
punctata of our shores. 
Species 55. (Fig. a, b, Mus. Sowerby.) 
ApLysiA ANGAsSI, Api. testd compressa, tenui, levigatd, 
subtrigond, arcuatd, pallide fused, intus vix tes- 
taced verstis apicem concentrice strigatd ; apice 

elevato, acuminato, refleco ; margine superiori de- 
clivi, excavato, ad terminum elevato, cuneato, labio 
externo, infra producto ; margine dorsali convexo, 
versiis margimem ventralem declivi. 
AnGass’s AptysiA. Shell compressed, thin, smooth, 
subtrigonal, arched, pale brown, very slightly 
testaceous, concentrically striped towards the apex ; 
apex elevated, acuminated, cuneate; outer lip 
produced below; dorsal margin convex, sloped 
towards the ventral margin. 
Sowerby. 
Hab. Port Jackson. 
Flatter than the shell of Aplysia depilans, which it 
much resembles. It is thinner at the edges, and the 
apex is not at all callous, but pointed and incurved. 
The dorsal margin is more rounded. 

Species 36. (Fig. a, b, Mus. Sowerby.) 
Aptysta sorex. <Apl. testd tenuissimd, conplunati, 
laevigata, vie arcuatd, perpendiculariter oblonga ; 
apice paulo elevato, ineurvo ; margine superiori 
subdeclivi, ad terminum elevato, cwneato; labio 
externo recto, margine dorsali elevato ; margine 
inferiori subrotundo. 
Tue rat Aptysia. Shell very thin, flattened, smooth, 
scarcely arched, perpendicularly oblong; apex a 
little raised, incurved ; upper margin a little sloped, 
elevated at the end, cuneate; outer lip straight; 
dorsal margin elevated; lower margin rather 
rounded. 
Rana. Hist. Nat. des Aplys., p. 57, pl. 4, f. 4-8. 
Tab. (?). Collected in the voyage of ‘* La Coquille” 
by Lessen. 

August, 1869. 
