114 MR. a. A. BOULENGER ON A COLLECTION 



C. dilloni C. & V. ; this is distinguished by the absence of barbels and the greater 

 size of the scales (30 to 32 in the lateral line). In the presence of a pair of barbels 

 and the small size of the scales, C. tanganicce belongs to the typical section of the 

 genus, inhabiting South-western Asia ; but it has the enlarged dorsal ray neither feeble 

 as in C. fundulus Pall, and allied species, nor serrated as in C. trutta Heck. 



6. Baebus plattrhinus. (Plate XII. fig. 2.) 

 Bouleng. Ann. & Mag. N. H. (7) vi. 1900, p. 479. 



Depth of body 3^ times in total length, length of head 4 times. Snout broad and 

 rounded, twice as long as the diameter of the eye, which is contained 5^ times in the 

 length of the head and 2^ times in the interocular width ; mouth small, with two pairs 

 of subequal barbels, the length of which equals the diameter of the eye. Dorsal III 8 ; 

 third ray not enlarged, not serrated ; the fin, which is equally distant from the eye and 

 from the caudal, has the free edge convex. Anal III 5, tie longest ray not quite f 

 the length of the head. Pectoral a little shorter than the head, not reaching the 

 ventral, which is inserted below the middle of the dorsal. Caudal forked. Caudal 

 peduncle If as long as deep. Scales 40 ^^^, 3-|- between the lateral line and the root 

 of the ventral. Olive-brown above the lateral line, golden yellow beneath. 



Total length 390 millim. 



A single specimen from south of Usambura. 



This species appears to be more nearly related to B. capensis. Smith, from which it 

 differs in the much shorter and broader snout. 



7. Barbus altianalis. (Plate XIII. fig. 1.) 

 Bouleng. Ann. & Mag. N. H. (7) vi. 1900, p. 479. 



Depth of body equal to or slightly greater than the length of the head, which is 

 contained 4 to 4^ times in the total length. Snout moderately broad, rounded, scarcely 

 projecting beyond the lower jaw, 1^ to If times as long as the diameter of the eye, 

 which is contained 5 to 5^ times in the length of the head and twice to twice and 

 one-fourth in the interocular width ; mouth small, with two pairs of subequal barbels, 

 the length of which equals or exceeds a little the diameter of the eye. Dorsal III-IV 9 ; 

 third or fourth ray very strong, ossified, not serrated ; the fin, which is equally 

 distant from the occiput and from the caudal, has the free edge notched and its 

 greatest depth is but slightly less than the length of the head. Anal III 5 ; the 

 longest ray measures about f the length of the head ; the fin, when folded, reaches 

 nearly the root of the caudal. Pectoral a little shorter J;han the head, not reaching the 

 ventral, the first ray of which corresponds to the origin of the dorsal. Caudal foiked. 

 Caudal peduncle nearly twice as long as deep. Scales 34-35 % 3 between the lateral 

 line and the root of the ventraL Olive-brown, very dark above. 



Total length 450 millim. 



