I9I3-] B. L. Chaudhuri : Fish. 247 



the caudal are: — F. "^ (figured) = 93 mm.j F. ^^ = 100 mm., 

 and F. ^ = 78 mm. (caudal damaged). Nine young specimens 

 of all sizes from the same locality collected by Captain the Hon. 

 M. de Courcy. Two young specimens from the Dihang River (east 

 side), near Yembung (alt. iioo ft.), and three young specimens 

 from the Sirpo River near Renging, collected by Mr. S. W. Kemp. 

 All the specimens were collected in the middle of the month of 

 January, 1912. 



Lcpidocephalichthys guntea (H. B.). 



Dibrugarh, 



Sub-family CYPRININAE. 



Discognathus lamta (H. B.). 



Siyom River, below Damda, 1400 ft. Found in an Abor fish- 

 trap. There is also a young Discognathus (36 mm. with the caudal) 

 from Yembung, 11 00 ft. The chest of the young specimen is 

 without scales ; it probably represents the common Assam race of 

 the species. 



Dr. N. Annandale has published a note on some of the so- 

 called species and local races of this genus from Assam and else- 

 where (Journ. As. Soc. Bengal, vol. ix, p. 36 ; 1913). He identi- 

 fies the Abor specimens as probably Discognathus lamta subsp. 

 nasutus (McClell.). 



Oreinus plagiostomus (Heck el). 



Yembung 



The anal opening is immediately in front of the anal fin. 

 The species has been previously reported from Afghanistan, 

 Kashmir and Bhutan. 



Oreinus richardsonii (Gray and Hardwicke). 



Yembung. Two specimens in a very much damaged condi- 

 tion. 



Oreinus sinuatus (Heckel). 



Yembung, alt. iioo ft. 



The scales of the lateral line are more numerous than usual. 



Oreinus molesworthi, sp. nov. 



(PI. vii, figs. 2, 2a, 2b.) 



The body is compressed and its depth is contained four times 

 in the total length. The length of the head is contained four and 

 a half times in the total length, and the width of the head is five- 

 eighths of its length. The snout is broadly rounded. The eyes 

 are nearer the end of the snout than the posterior border of the 

 head; they are almost lateral and their diameter is contained five 



