APLYSIA.—P.ate IX. 
producto; margine inferiori rotundo, versits mar- 
ginem dorsalem sursum acclivi, margine dorsali re- 
Jlexo, convexo. 
Tuer sporrep Aptysia. Shell horny, chestnut, pellucid, 
convex, obliquely ovate, smooth; apex produced, 
reflected, incurved, slightly callous, subauricu- 
lated; upper margin rather short, excavated, ob- 
tusely angulated at the end; outer lip straight, 

obliquely produced below; lower margin rounded, 
sloping up towards the dorsal margin; dorsal 
margin reflected, convex. 
Cuvier. Ann. du Mus. d’Hist. Nat., vol. ii. p. 295, 
wb ile 2 
Aplysia hybrida. Sowerby. 
Aplysia Cuviert. Delle Chaige. 
Hab, British shores; Mediterranean. 

