1852.] Proceedings of the Asiatic Society. 35/ 



fauna, — and Drymocataphus fuscacapillus, nobis, J. A. S. XVIII, 

 815, but which should rather have been classed in Pellorneum.* 



Mr. Layard has further favored us with a most valuable and inter- 

 esting collection of shells, in all more than 200 species, and we have 

 now to thank him for about 1/0 species, and fine series of many of 

 them, — land, fresh-water, and marine, — while of others are sent inferior 

 or imperfect examples, for report as to whether we required good 

 specimens of the same, in which case Mr. Layard will forward them 

 and has probably ere this done so. The species presented by him to 

 the Society are from various parts of the world, but a large proportion of 

 them, particularly of the land and fresh-water species, are from Ceylon, f 



* In the genus Pellorneum should likewise be merged Dumetia, nobis, 

 founded on the Timalia hyperythra, Franklin, of S. India and Ceylon, Malaco- 

 cercus ? albngularis, nobis, /. A. S. XVII, 453. There would thus be four ascer- 

 tained species of Pellornium, Sw., all closely affined to Malacocercus in form 

 and habits. 



f The following species of fishes have also, on different occasions, been pre- 

 sented to the Society by Mr. Layard. 



Upeneus Russellii, C. and V. ; — Holocentrum orientale, C. and V. ; — 

 Platycephalus scaber, (Bloch) ; — Gliphisodon rahti, C. and V. ; — Ch^eto- 

 don sebanus, C. and V.; — Ch. Layardi, nobis, n. s. ; — Acanthurus trios- 

 tegus, (Bloch); — A. xanthurus, nobis, n. s. ; — Amphacanthus javus, (L.); 

 — A. sutor. C. and V. ; — Barbus tor ( ? B. Ham.), young ; — Hemirhamphus 

 Georgii, Val. ; — and Rhombus triocellatus, Cuv. 



Ch^etodon Layardi, nobis, n. s. Affined to Ch. vagabundus, L. General 

 colour (in spirit) golden-brown, with a broad vertical blackish band from occiput 

 to throat passing through the middle of the eyes, bordered behind by a white band 

 of similar breadth, and this by a much narrower dark streak not reaching to the 

 throat ; lips and chin black, separated from the dark ocular band by a white space 

 of the same breadth ; fins whitish, with a single black band crossing the tail, — ano- 

 ther extends throughout the soft portion of the anal, and having a strongly defined 

 white border above, and a less defined whitish border below, and the posterior or 

 descending portion of the dorsal has also a similar black band, continued a little 

 over the base of the tail; longitudinal bands on the sides as in Ch. vagabundus, 

 &c. D. if; A. T %; C. 17 ; P. lb; V. i. Length of specimen 2| in. 



Acanthurus xanthurus, nobis, n. s. Affined to A. xanthopterus, Cantor, 

 but deeper in the body, and wholly black with bright golden-yellow tail, and a 

 tinge of the same upon the pectorals. D. ^ • A. ^\ ; C. 17; P. 15; V. I. 

 Length of specimen 1\ in. 



Two species of Snakes have also been sent by Mr. Layard, viz. Trigonocepha- 

 lies hypnalis, (Merrem), and Xenodon purpurascens, var. 



2 z 2 



