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



Eolis Smedleyi, Kel. 



Dorsal tentacles pyramidal, ringed, of a dusky grey colour ; oral 

 tentacles long, pointed, white, with a central red ring. Branchiae 

 in five small clusters on each side ; the anterior pair the 

 largest. Papillae short, conical, white, and ringed with grey. 

 Foot long, with anterior tentacular processes. Length 4 or 

 5 lines. 



I have named this species in remembrance of one who was 

 a frequent visitor of my "Aquarian establishment," and who 

 took a warm and friendly interest in all my scientific pursuits. 

 This small Eolis was discovered on some sea-weed growing in a 

 vivarium. 



Genus Proctonotus, A. and H. 



Animal oblong, depressed, pointed behind. Dorsal tentacles two, 

 linear, simple, with eyes at their base behind ; oral tentacles 

 short. Head covered by a small semilunar veil ; mouth with 

 horny jaws; gills papillose, on ridges down the sides of the 

 back and round the head in front; vent dorsal. — Woodward. 



Proctonotus orientalis, Kel. 



Animal semigelatinous, greenish. Dorsal tentacles two, bifur- 

 cated and retractile ; oral tentacles short, pointed. Bran- 

 chiae : four or five rows on each side of body, those nearest the 

 body smaller ; wedge-shaped, rounded superiorly, flattened ; 

 green, spotted with grey and green. Branchiae carried round 

 the head in two or three rows ; middle ones longer ; all of the 

 same shape. Foot broad, long, grooved beneath. Length 2\ 

 inches. Ova white, in waved thread-like coils. 



This exceedingly interesting animal may perhaps occupy a 

 new generic place, as I do not observe the bifurcated dorsal 

 branchiae noticed in the other species of the genus Proctonotus. 

 When coiled up, it looks like a flower with green petals. 



Found in Trincomalee, in May and July. 



Pterochilus viridis, Kel. 



Animal light green. Length | inch. Tentacles two, simple, 

 long, pointed. Head with small lateral lobes. Branchiae 

 very numerous, closely set, long, linear, acutely pointed, 

 green, and spotted with darker green and grey. Foot 

 linear. 



Found on sea-weeds, and, owing to its colour, not easily re- 

 cognized. Lives for a long time in confinement. Ova green. 



