﻿48 



size, the nuchal ones commencing far behind eye. Lateral line 

 curved downward and approximated to ventral profile. Pseu- 



Fig. 21. Laithuca (^Ens/ira) ?iiaassi (M. Web. & de Bfrt.) X 2'/2- 



dobranchiae present. Pharyngeal teeth uncinate, in 3 rows. 

 Branchial opening ending below eye. 



Distribution: Sumatra, Ceylon and south eastern Asia. 



Key to subgenera. 



1. Lateral line gently curved downward Latibtica s.str. p. 48. 



2. Lateral line abruptly curved downward Enstira p. 49. 



Note: We do not think/ that the Gewus, Eustira ofGiinther 

 is generically distinct from Lmibuca, we therefore give it only 

 the value of a subgenus, containing Eustira ceylonensis Gthr. 

 and our Enstira inaassi. 



I. Laubuca (Laubuca) laubuca (Ham. Ruch.). 



Cypi-'tnus laubuca Hamilton Buchanan, Fishes of the Ganges, 1822, p. 260. 



Perilampus guttatus M'Clelland, Ind. Cypr. 1839, p. 394. 



Lcuciscus laubuca Bleeker, Verh. Bat. Gen. XXV. 1853. Nalez. fauna Bengalen 



en Hindostan p. 138. 

 Chela laubuca Gunther, Cat. Brit. Mus. VII. 1868, p. 335. 

 Perilampus laubzica Day, Fishes of India 4". 1878 — 1888, p. 598. 

 Perilampus laubuca Duncker, Mitt. Naturhist. Mus. Hamburg, XXIX. 1912, 



p. 267. (sine syn.). 



61 



D. 2.8; A. 2.19; P. I.I I; V. 1.6; L. 1. about 32—34; L. tr. i_. 



5 



Dorsal profile convex behind a nuchal concavity, that of 

 head straight. Abdominal profile convex from snout to anus, 

 with a trenchant keel. Height 3.2 — -i^.G, 4.1 — 4.6 in length with 

 caudal. Head 4 or somewhat more, about s'/^ in length with 

 caudal. Eye nearly 3, somewhat longer than snout and than 

 flat interorbital space. Gape of mouth obliquely ascending, not 

 reaching to level of lower border of eye. Origin of dorsal 



