Ceylon Nudibranchiate Molluscs, and Zoophytes. 91 



CEYLON NUDIBRANCHIATE MOLLUSC A. 

 (naked molluscs.) 



Sub-Kingdom. Mollusca. 



Class. Gasteropoda. 

 Order. Nudibranchiata. 

 Fam. Dorididje. 

 Branchial plumes surrounding the vent on the medio-dorsalline. 

 Sub-Family. DoRiDiNiE. With a cloak. 

 Genus. Doris. Linnceus. 

 Animal oblong, covered by a mantle; four tentacles, two 

 superior or dorsal, clavate or conical, retractile within cavities, 

 sometimes slightly sheathed. The two inferior or oral tenta- 

 cles placed on each side of the mouth, they are sometimes 

 absent or replaced by flat appendages; eye specks immersed 

 behind the dorsal tentacles, not always visible in the adult; 

 lingual membrane with numerous lateral teeth; rachis often 

 edentulous; stomach simple; liver compact; skin strength- 

 ened with spicula, more or less definitely arranged. 



Doris Gloriosa. Kel J 



Synonym. Doris marginata ? Leuchart. 



Body nearly three inches long ; oblong, of a pinkish colour 

 minutely dotted with red and white. Mantle large, oval, 

 broad, when expanded entirely covering the foot. Back 

 mottled with pink, red, and yellow, and minutely punctulated 

 with red and yellow ; edged broadly with white, then by a 



