204 



Mr. C. T. Regan on the Glupcid Fishes 



comprising; 2 or 3 strongly enlarged teeth on each side. 

 Vertebrae 42. 



Fis. 1. 



1. 2. 



Heads of 1. Cynothrissa mento, 2. Potamothrissa ohtusirostris (x 2^). 



1. Cynothrissa 7nento, sp. n. (Fig. 1, 1.) 

 Fellonula vorax (part.), Bouleng. Cat. Afr. Fish. i. p. 156, 



Depth o£ body 4 in the length, length of head (without 

 lower jaw) 3f. Snout longer tiian diameter of eye, whicii is 

 3f in len<2th of head ; maxillary extending to below anterior ^ 

 of eye. 19 gill-rakers on lower part of anterior arch. About 

 45 scales in a lotigiluilinal series, 14 in a transverse series ; 

 ventral scutes 15 + 9. Dorsal 17 ; origin above base of 

 pelvics, equidistant Ironi end of snout and base of caudal. 

 Annl 21. Caudal peduncle longer than deep. 



Nigeria. 



A single specimen, 130 mm. in total length, from Agberi, 

 SoQlliern Nigeria. 



This new species is distinguished from C. ansorgii by the 

 more slender form, fewer gill-rakers, and more numerous 

 anal rays. 



2. Cytiothrissa ansorgii. 



Fellonula vorax (part.), Bouleng. Cat. Afr. Fish. i. p. 156 (1909). 

 Odaauthrissa ansvrf/ii, Boulenger, op. cit. iv. p. 172, tig. 112 (1916). 



Depth of body 3 to o\ in the length, length of head 

 (witiiout lower jaw) 3? to 4. Snout as long as or longer 

 than diameter of eye, which is 3 to 4 in k-nglh of head; 

 maxillary extending to below anterior I or middle of eyt-. 

 23 to 25 gill-iakers on lower part of anterior arch. 42 to 45 

 scales in a longitudinal series, 14 or 15 in a transverse 

 series; ventral scutes 13-16 + 9-11. Dorsal 15-17; origin 



