4 8 



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

 curved downward and approximated to ventral profile. Pseu- 



Fig. 21. Laubuca (Eustira) inaassi (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 Laubuca s.str. p. 48. 



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



Note: We do not think, that the Genus Eustira ofGiinther 

 is generically distinct from Laubuca, we therefore give it only 

 the value of a subgenus, containing Eustira ceylonensis Gthr. 

 and our Eustira maassi. 



i. Laubuca (Laubuca) laubuca (Ham. Buch.). 



Cyprinus laubuca Hamilton Buchanan, Fishes of the Ganges, 1822, p. 260. 



Perilampus gut talus M'Clelland, Ind. Cypr. 1839, p. 394. 



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



en Hindostan p. 138. 



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

 Perilampus laubttca Day, Fishes of India 4. 1878 1888, p. 598. 

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



p. 267. (sine syn.). 



61 



D. 2.8; A. 2.19; P. 1. 1 1 ; V. 1.6; L. 1. about 32 34; L. tr. j_. 



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 3.6, 4.1 4.6 in length with 

 caudal. Head 4 or somewhat more, about 5*/ 2 m 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 



