296 Dr. E. F. Kelaart on new species of Ceylonese Mollusca, 



locality and at the same time. The characters of the young 

 species are also very marked, as in the adult specimens. 



Doris nivea, Kel. 



Body f inch long, convex, elHptical, snowy white. Mantle 

 coriaceous, granular, white, occasionally seen speckled indi- 

 stinctly with small grey spots. The purplish-coloured viscera 

 seen through the opaline back. Dorsal tentacles pure white, 

 short, conical, slightly pointed, lamellated at tip. Oral ten- 

 tacles linear. Branchial plumes six or seven, white, bipinnate. 

 Foot white, shorter than mantle. 



This snowy-white opaline Doris is probably only a variety of 

 Doris pallida of Leuckart, found by Riippell in the Red Sea. It 

 has not, however, all its characters ; the cloak resembles that of 

 D. repanda in some respects. It has white nerve-like lines on 

 the margin. I have only seen one specimen, which lived for a 

 few days. 



Doris marmoratay Kel. 



Body 2J inches long, oblong, convex, coriaceous, white, speckled 

 reddish brown. Mantle broad and long, covering the foot, 

 thick, hard, granular, marbled with black and reddish brown, 

 and irregularly spotted with white. Under surface white, and 

 mottled with irregular-shaped purplish-red spots. Branchial 

 plumes six, united at base ; superior half plumose, tripinnated, 

 grey, and grizzled with brown. Dorsal tentacles large, cla- 

 vate, laminated, brown, and speckled with white; sheaths 

 granular. Head small. Oral tentacles long, linear, acutely 

 pointed. Foot white, deeply notched and grooved in front, 

 spotted with reddish brown. 



This large marbled Doris lived only a few days. They are 

 found on rocks near Fort Frederick, at low-water mark. Some 

 are of a darker brown colour than others. 



Doris cerisa, Kel. 



Body J inch long, convex, oval, of a vermilion-red colour. 

 Mantle of a cheriy-red colour, covering the foot. Branchial 

 plumes six or seven, very small, straight and stiff, bipinnated, 

 of a crimson-red colour. Dorsal tentacles small, conical, 

 lamellated, purplish red, speckled with white, tip grey. Oral 

 tentacles indistinctly seen. Foot pinkish. 



I have only seen one specimen of this exceedingly pretty 

 species. It lived for several months in a finger-glass. It cannot 

 be mistaken for the young of any other Ceylonese species herein 

 described. Ova red, in six narrow tape-like coils. The ova of 

 D. rubra (mihi) are white. 



