found on the South Coast of Devonshire. 107 



The animal when fully extended is nearly double the length 

 of the shell : length of the specimen figured,' two inches and a 

 half; of the shell, one and a quarter. 



The colour is a mixture of purplish-brown, cinereous and 

 orange, disposed in minute confluent specks, darkest on the 

 lateral fins. 



Doris longicornis. 

 Tab. VII. Fig. 1. 



Body long, slender; posterior end acuminated; head rounded 

 in front : tentacula four, of which the first pair are very long, seti- 

 form, and extend forward ; the other pair are remote, short, and 

 erect: eyes two, small and black, situated at the base of the hind- 

 most tentacula : on the right side, near the eyes, is a cluster of short 

 cirri ; and at a little distance from these commence four series 

 of longer ones, of a pink colour, spotted with white, standing 

 transversely, and extending down the sides ; these cover the mid- 

 dle of the animal ; the other parts are yellowish-white, tinged 

 with pink about the eyes. 



Length half an inch. 



Doris nodosa. 

 Tab. VII. Fig. 2. 



Body obovate, convex above, surrounded by a broad mem- 

 branaceous margin : tentacula two, short, with perfoliated tips, 

 and retractile, within depressed receptacles : on each side the 

 back are four equidistant nodules or papillae: at the posterior 

 end of the back are nine or ten ramous appendages : the susten- 

 taculum is broad, bilobated in front, and acuminated be- 



p 2 hind : 



