Dr. E. F. Kelaart on new species of Ceylonese Mollusca. 295 



spotted with purple ; on each side of the mouth a short hnear 

 tentacle, white. Foot narrow, longer than the mantle, slightly 

 expanded in front, spotted with purple on the upper surface. 

 This lovely little Doins is rarely found. Two specimens, ob- 

 tained in May, are still alive in a finger-glass, generally resting 

 on the side of a stone. At night it crawls out of its hiding- 

 place and creeps along the sides of the glass, and is sometimes 

 seen floating on the surface of the water on its back. When 

 touched with a feather, it adheres by its foot, and can be kept 

 dangling in this position by the aid of the mucous thread secreted 

 by the surface of the foot. Several Eolidce were kept in the 

 same vessel, and it has survived them all, though attacked re- 

 peatedly by them. Ova white, deposited on the side of the glass 

 in a thread-like coil. 



Doris fidelis, Kel. 



Body f inch long, narrow, convex, white. IMantle oblong, with 



parallel sides, shorter than the foot, of a waxy- white colour, 



the edge lined with red, and irregular, tooth-like, transverse, 



internal prolongations of the same colour ; those on the sides 



longer, alternating with short ones. Branchial plumes seven 



or eight, black, lanceolate, pinnated, few-branched at tip. 



Dorsal tentacles oblong, flattened, pointed ; apex black, lamel- 



lated. Oral tentacles small, acutely pointed. Foot white, 



narrow, slightly dilated in front and pointed posteriorly. 



Found on coral rocks, at low-water mark, in August and 



September. This singularly marked species looks, when the 



tentacles and branchiae are retracted, like a large bean. Its 



jet-black plumes and tentacles appear very conspicuously above 



the red-margined white mantle. It is very tenacious of life. 



Ova deposited in narrow white coils. 



Doris pretiosa, Kel. 



Body white, | inch long. Mantle pale greenish yellow, very light- 

 coloured on the sides, where there is also a bluish shade, 

 closely speckled with small reddish-brown spots; margin 

 marked with a narrow purple-red line and a light orange 

 shade. Dorsal tentacles short, with reddish-purple apex, 

 clavate, laminated. Oral tentacles triangular, sharp-pointed. 

 Branchise short, pinnated, reddish purple. Foot white, shorter 

 than mantle. 



This gem-like elegant species is of the same size as D. fidelis, 

 and not unlike it in appearance. The deep blood-red branchial 

 plumes and the red-margined speckled cloak sufficiently sepa- 

 rate it from the last species. They are both found in the same 



