IVl^ OTPKTNTDJE. 



which is two-sovenths of the total (without caudal). Head rather 

 low, with the iipi)cr profile somewhat concave. The width of the 

 ii'terorbital space is much morn than the diameter of the eye, which 

 equals the length of the snout, and is one-fourth of that of the head. 

 IMoutli oblique, of moderate width, the maxillary extending to the 

 \ortical from the front margin of the orbit; lower jaw projecting 

 beyond the upper. Caudal fin deeply forked. Each series of scales 

 along the side of the body with an ol)tuse ridge ; two longitudinal 

 series of scales between the lateral line and ventral fin. Coloration 

 uniform, silvery. Gill-rakers rather slender, not very short, setiform. 

 ]liver llovuma. 



a. Type of the species. From Lieut. -Col. Playfair's Collection. 



^. With barbels (Megarasbora). 

 12. Easboru elanga. 



Cvprinus elanga, Ham. Buck. Fish. Gaiiij. p. 281. 



Luuciscus dystomus, M'Clell. Incl. Cypr. pp. 292, 40G, pi. 5G. fig. 4. 



D. 9. A.. 7. V. 8. L. lat. 40. L. transv. 7/5. 



The height of the body equals the length of the head, which is one- 

 fourth of the total (^without caudcd). Snout somewhat pointed, but 

 scarcely longer than tlie diameter of the eye, which is nearly one-fourth 

 of the length of the head, and much less than the width of the inter- 

 orbital space. Jaws even in front, with the notches and prominences 

 very conspicuous. A pair of barbels near the upper end of the maxil- 

 laries ; they are very small, scarcely half as long as the eye. Origin 

 of the dorsal fin immediately behind the root of the ventrals, and 

 midway between the root of the caudal and the eye. Pectoral fin not 

 extending to the ventral. There are one and a half longitudinal series 

 01 scales between the lateral line and ventral fin. Uniform silvery. 



Assam and 'Bengal. 



a. Four and a half inches long. Cacliar. Presented by Lieut.-Col. 

 Playfair 



47. LUCIOSOMA. 



Barbus, sp., Cuv. c^ Vul. 



Ijuciosoma, Bleek. Prodr. Cypr. p. 411. 



Trinematichthys, Bleek. Ail Ichth. Cypr. p. 1.31. 



Scales of moderate size. Lateral line curved downwards, running 

 along the lower part of the l)ody and tail. Dorsal fin with seven 

 branched raj's, inserted behind the ventrals, and extending to aboAO' 

 the anal ; anal short. Mouth very wide, extending beyond the 

 front margin of the orbit, with the lower slightly prominent and 

 tapering into a tubercle fitting into a groove of the upper jaw. 

 Barbels four, more or less developed. The third suborbital is broad, 

 nc'uly covering the cheek entirely. Gill-rakers extremely short, 

 A^ idcly set ; pscudobranchife. Pharyngeal teeth 5.4. 2 — 2 .4.5, 

 \i iicinate. 



East-Indian archipelago. 



