262 



SILURID.E. 



1J times as long as broad, smooth ; occipital process very short and 

 forming a very open angle ; frontal fontanelle sole-shaped, | length of 

 head ; occipital fontanelle smaller, in advance of occipital process ; 

 eye h length of snout, | interorbital width, which is a little less than 

 \ length of head and equals width of mouth ; band of pnemaxillary 

 teeth 4 times as long as broad; vomerine teeth conical, forming a 

 crescentic band which is as broad as the prremaxillary band; nasal 

 barbel f length of head *. Gill-rakers 

 rather long, 15 on auterior arch. Clavicles 

 feebly striated and covered with a thin 

 skin. Dorsal 80, its distance from occipital 

 process f length of head. Anal 65. 

 Both dorsal and anal embracing root of 



Fi K . 217. 



■"■ ; ,■' 



ssfiipdiiw 





^^^^^^^^^^ 



Clarias ampfoxicaudci; 

 Type(A.M.C.). |. 



caudal. Pectoral f length of head, its spine serrated on both sides 



and measuring § the length of the fin. 



Ventrals once and \ as distant 



Caudal a little more than h length 



from caudal as from end of snout 



of head. Blackish brown above, a little lighter beneath. 



Total length 155 millim. 



Upper Ubanghi. — Type in Congo Museum, Tervueren. 



31. CLARIAS THEODORJE. 



M. Weber, Zool. Jahrb., Syst. x. 1897, p. 150 ; Bouleng. Proc. Zool. Soc. 1907, 

 p. 1089. 



Depth of body 6 to 7 times in total length, length of head 4^- to 5| 

 times. Head If or 1^ times as long as broad, smooth; occipital process 

 angular, broader than long ; frontal fontanelle sole-shaped, twice as long 

 as broad and \ length of head ; occipital fontanelle smaller, in advance of 

 occipital process ; eye very small, 3 times in length of snout, 5 to 6 times 

 in interorbital width, which equals width of mouth and a little less than 



* The other barhels are mutilated in the single known specimen. 



