62 MR. G. A. BOULENGER OX FISHES [Feh. 7, 



2. On a Second Collection o£ Fishes made by Mr. S. L. 

 Hinde in the Kenya District, East Africa. By G. A. 



BOULENGEE, F.R.S., Y.P.Z.S. 



[Received December 29, 1904.] 



(Plate YII.*) 



Nearly three years ago 1 1 had the pleasure of reporting on a 

 small collection of Fishes made by Mr. S. L. Hinde in the Mathoiya 

 River, among which were examples of four new species. The 

 Bi'itish Museum is indebted to Mr. Hinde for a second collection 

 made in the Kenya District, partly again in the Tana River 

 system, partly in the wholly unexplored Nyiro River system, which 

 takes its source in the Aberdare Range and loses itself in the 

 Loriaii Swamp. This second collection contains examples of only 

 five species, two of which had been previously discovered by 

 Mr. Hinde, the three others being new to Science. 



1. DiscoGNATHUs HINDU, sp. n. (Plate YII. fig. 1.) 



Body feebly compressed, its depth 5 to 5g times in the total 

 length. Head broader than deep, once and ^to once and | as long 

 as broad ; snout rounded, projecting very strongly beyond the 

 mouth ; interorbital region flat, its width not quite half the length 

 of the head ; eye supero-lateral, not visible from below, in the 

 middle of the length of the head, its diameter 4 (young) to 5 times 

 in the length of the head and twice to twice and a half in the 

 interorbital width ; width of mouth about |- the length of the head ; 

 upper lip well developed, fringed ; lower lip forming a mental 

 disk which is broader than long ; two barbels on each side, 

 measuring ^ to f the diameter of the eye. Dorsal equally distant 

 from the centre or the anterior border of the eye and from the 

 root of the caudal ; first branched ray longest, as long as the head 

 or a little shorter. Anal II 5, first branched i-ay longest, about 

 # the length of the head. Pectoral nearly as long as the head, not 

 reaching the ventral, which is situated below the middle of the 

 dorsal. Caudal fin deeply emarginate, i\ s long as the head. Caudal 

 peduncle once and ^ to once and | as long as deep. Scales 38-42 

 ^i, 3^ or 4 between the lateral line and the ventral, 16 round 

 the caudal peduncle. Dark olive above, whitish beneath ; usually 

 a few black spots on the base of the doi-sal fin ; young with a 

 more or less distinct yellowish, dark-edged bar at the root of the 

 caudal fin. 



Total length 70 millimetres. 



Numerous speeimeus from the head- waters of the Nyiro River, 

 at an altitude of 7000 feet. 



In these ' Proceedings ' for 1903 (ii. p. 531) I have given a 

 synopsis of the African species of Discognathus. The species now 

 added is most nearly allied to D. hlavfordii, which has a lo\\ er 

 number of scales in the lateral line. 



* For explanation of the Plate, see p. 64. f P- ^- S. 1902, ii. p 221. 



