2 3 2 



rays, situated in the anterior half of the total length and 

 originating before ventrals. Anal short, with 5 branched rays. 

 Pectorals short, rounded, subhorizontal. Caudal forked. Scales 

 rather large. Lateral line straight, running in the middle of 



'U 



Fig. 96. Opened mouth of Crossochilus gnathopogon n. sp. X 4- 



b maxillary barbel; d line of demarcation between skin of rostrum and upper lip; 



/ frenulum; Ij lower jaw; // lower lip; uj upper jaw; ul fringed upper lip. 



the tail. Pharyngeal teeth 5.4.2 2.4.5, obliquely truncate. 

 Branchial openings rather narrow, gillmembranes broadly united 

 to isthmus. 



Distribution: Fresh water of Indo-australian Archipelago 

 (Sumatra, Java, Borneo) and East-Indian Continent. 



Key to the indo-australian species. 



I. Two barbels only. 



a. Only a pair of rostral barbels C. oblongus p. 232. 



b. Only a pair of maxillary barbels C. gnathopogon p. 233. 



II. Four barbels. 



1. 5'/2 scales below lateral line, 3 scales between 



origin of ventrals and lateral line C. cobitis p. 234. 



2. 4Y-2 scales below lateral line, 2 scales between 



origin of ventrals and lateral line C. langci p. 234. 



i. Crossochilus oblongus (C.V.) 



Labeo oblongus Cuvier & Valenciennes, Hist. Nat. Poissons XVI. 1842, p. 357. 

 Crossocheilos oblongus Bleeker, Nat. Tijdschr. Ned. Indie V. 1853, p. 525. 

 Crossocheilos (Crossocheilos) oblongus Bleeker, Ichth. Arch. Ind. Prodr. II. Cyprini 



1860, p. 124. Atl. Ichth. III. 1863, p. 40. 

 Crossochilus oblongus Gunther, Cat. Brit. Mus. VII. 1868, p. 73. 

 Crossochilus oblongus var. nigriloba Popta, Notes Leyden Mus. XXVII. I9o6,p. 1 20. 



