AVP’ LY Subd. 
Puate VII. 
Species 27. (Mus. ?) (Copied.) 
APLysIA LurIDA. Apl. testa tenui, compressa, subtri- 
gonad, pallida, concentricé undata ; apice terminali, 
calloso, elevato ; margine superiort declivi, leviter 
excavato, ad terminum cuneato; labio externo 
quadrato, margine dorsali rectiusculo. 
Tae Lurip Aptysia. Shell thin, compressed, subtri- 
gonal, pale, concentrically undated; apex terminal, 
callous, elevated; upper margin sloped, slightly 
hollow, cuneate at the end; outer lip square; 
dorsal margin rather straight. 
D’Orsieny. Voy. Amér. Mérid., p. 28. 
Hab. Central America, 


Species 28. (Mus. ?) (Copied.) 
ApLysia Incus. <Apl. testé latd, subquadratd, com- 
press, pallidé stramined, laevigata ; apice sub- 
elevato, calloso, terminali ; margine superiori recto, 
elongato, ad terminum quadrato; labio externo 
recto, infra subquadrato ; margine dorsali supra 
recto, infra versis labiwm externum declivi. 
Tue anvit AptysiA. Shell broad, subquadrate, com- 
pressed, pale straw, smooth, apex a little elevated, 
callous, terminal; upper margin straight, long, 
square at the end; outer lip straight, subquadrate 
below; dorsal margin straight above, sloping to- 
wards the outer lip below. 
D’Orsieny. Voy. Amér. Mérid., pl. 14, f. 13. 
Hab. Central America. 

Species 29. (Fig. a, 6, Mus, Cuming in Brit.) 
ApLysIA SINENSIS. Ap. testd tenui, hyalina, arcuatd, 
quadratd, concentrice tenuilirata ; apice subtermi- 
nali, parva, biauriculata, margine superiori recti, 
arcuata, ad terminum obtuse angulatd, labio ea- 
terno pauld convexo, margine dorsali reflexo, infra 
declivi. 
Tne Cuinese Apiysia, Shell thin, hyaline, arched, 
quadrate, concentrically finely ridged ; apex nearly 
terminal, small, biauriculated; upper margin 
straight, arched, obtusely angular at the end; 


outer lip a little convex, dorsal margin reflected, 
sloped below. 
SoweErsy. 
Hab, Chinese Seas. 
The whole shell is laterally much curved. 


Species 30. (Mus. ?) (Copied.) 
Apl. testa obliqué oblonga, ven- 
tricosd, solidiusculd, stramined, intus alba ; apice 
elevato, rotundo, incurvo ; margine superiori valde 
declivi, excavato, ad terminum cuneato ; margine 
dorsali valde convexo, elongato, infra versis labium 
externum declivi; labio externo convexo, infra 
oblique producto, 
Tue Braziuian Aptysia. Shell obliquely oblong, ven- 
tricose, rather solid, straw-coloured, white within ; 
apex elevated, round, incurved; upper margin 
much sloped; excavated, cuneate at the end; 
dorsal margin very convex, elongated, sloped to- 
wards the outer lip below; outer lip convex, 
obliquely produced below. 
Rana. Hist. Nat. des Aplys., pl. 7, £1, 2, 3, p. 55. 
Hab. Brazil. 
APLYSIA BRAZILIANA, 

Species 31. (Fig. a, 6, Mus, Sowerby.) 
APLYSIA SYDNEYENSIS. Apl. testd compressd, perpen- 
diculariter oblonga, medio castunea, verstis mur- 
gies pallidé corned; apice obtuso, terminali, 
reflexo, incurvo ; margine superiori recto ; labio 
externo recto; margine inferiort subquadrato ; 
margine dorsali convexo. 
Tur Sypney Aprysta. Shell compressed, perpendi- 
cularly oblong, chestnut in the middle, pale 
horn near the margins; apex obtuse, terminal, 
reflected, incurved ; upper margin straight; outer 
lip straight; lower margin subquadrate; dorsal 
margin convex. 
Sowerey. 
Hab, Sydney. 
The shell of this species has some resemblance to 
that of a Pleurobranchus. 
August, 1869. 
