Ceylon Nudibranchiate Molluscs, and Zoophytes. 105 



and observe tlie gradual diminution of the intensity of the 

 red line, till it became almost obsolete in the larger specimens, 

 I should be inclined to consider the characters of the young 

 to be those of a distinct species ; so very great are the 

 external characters of the young and older animals. The 

 presence of the red line in the young of this species, and 

 its non-existence in the young of D. atrata, still more confirms 

 me in the opinion already advanced, that they are not identical 

 species. Both are very sluggish in their habits ; generally, 

 two or more lie locked in each other's embraces, under a stone 

 or a coral branch. In confinement they live longer than any 

 species I have had under observation. 



Doris Variabilis. AW. 



Body 6 lines long, pellucid green ; the red viscera seen 

 through it. Mantle greenish brown and marked with longitu- 

 dinal rows of reticulated whitish spots. Dorsal tentacles 

 clavate, laminated ; greenish brown, speckled ; tip white. 

 Branchial plumes 8, small, round a central cavity, tripinnate ; 

 brown, speckled white. Foot pellucid green ; shorter than 

 mantle. 



This species is found in great abundance on rocks in Dutch 

 Bay at low water mark. They vary much in depth of colour; 

 green however always prevailing. In habits like D. atrata. 



Doris Exanthemata. Kel J 



Body 5 inches long ; pinkish or light purple colour. 

 Mantle long, broad ; covered with large and small, smooth 

 conical and rounded nodules, rising from smooth elevated 

 bases. The upper surface is of a deep olive brown colour, 



1858.] p 



