GASTEROPODA. 293 
fifty. When disturbed, it rolls itself up into a rounded mass. In 
form it is like Onchidium nigricans, as given by Quoy and Gaimard, 
but it is very much larger and differs in many particulars. [J. P. c.] 
Figures 386, 386 a, 386 4, lateral, dorsal, and ventral views of the 
animal, enlarged ; 386c, the animal contracted ; 386 d, cowl and tenta- 
cles, in outline; 386 e, natural size. 
PERONIA CORPULENTA (Gould). 
Corpus linguiforme, convexum, supré. cyaneum, infra olivaceum, tuber- 
culis magnis elevatis rotundatis, minoribus circumyacentibus, tnstrue- 
tum ; veli marginibus undulatis ; cucullo cordato ; tentaculis elongatis, 
linearibus, viridibus: solea pallida trientes duos latitudinis corporis 
adequans. 
ANIMAL elongated oval, truncated in front, deep sea-green above, 
olivaceous beneath ; foot pale; back arched, bearing numerous large, 
elevated, rounded tubercles, with numerous smaller intervening ones ; 
margins undulated ; hood projecting beyond the body, broad as the body, 
heart-lobed ; lobes circular; simple and deep green above, somewhat 
violaceous beneath ; mouth quite small, orange ; tentacles linear, rather 
stout and long, green : foot two-thirds the length of the body. 
Length two and a half inches; breadth one inch; height half an 
inch. 
Found at Direction Island, one of the Feejees. 
A large species, somewhat irregular in its outline. 
Figures 385, 385 a, dorsal and ventral view of the animal. 
Doris VERMICELLI (Gouw/d). 
D. oblongo-ovalis, tumida, verrucosa, ochracea maculis ferrugineis varie- 
gata, infra incolorata: caput parvum ; tentaculis labiahbus tenuibus 
elongatis: tentacule cervicales brevi, compresse omnino laminate: 
74 
