1086 MR. G. A. BOULEXGER OX [DeC- 10, 



inner mandibular barbel 5 to f length of head, about f length of 

 outer. Gill-rakevs on first arch not closely set, 12 to 15 in 

 number. Clavicles concealed under the skin. Dorsal 66-72, 

 its distance from occipital process about i length of head, 

 narrowly separated from caudal. Anal 49-55. Pectoral | to 

 ■3- leno-th of head, the spine serrated on both sides, about | the 

 feno'th of the fin. Yentrals much nearer end of snout than 

 caudal. Caudal about f length of head. Uniform dark brown. 



Total length 155 millim. 



Angola. 



25. Clarias liberiensis. 



Steindachner, Notes Leyd. Mus. xvi. 1894, p. 54. 



Clarias hulumce Steindachner, t. c. p. 55, 



Depth of body 5 to 6| times in total length, length of head 3| 

 to 4^ times. Head 1| to 1^ times as long as broad, smooth or 

 very~ finely granulate above ; occipital process angular ; frontal 

 fontanelle small, sole-shaped ; occipital fontanelle smaller, just in 

 advance of occipital pi'ocess ; eye very small, its diameter 3 times 

 in length of snout, 7 or 8 times in irtterorbital width, which equals 

 width of mouth and is contained twice in length of head ; band 

 of prasmaxillary teeth 4 times as long as broad ; vomerine teeth 

 conical or subgranular, forming a crescentic band which is as broad 

 as the prfemaxillary band ; nasal barbel | to 4 length of head ; 

 maxillary barbel a little longer (up to 1|) than head, reaching 

 nearly to end of pectoral fin or a little beyond ; inner mandibular 

 barbel as long as nasal, little shorter than outer. About 20 gill- 

 rakers on the first arch. Clavicles concealed under the skin. 

 Dorsal 60-68, its distance from occipital process |- length of 

 head, almost in contact with caudal. Anal 44-55, almost in 

 contact with caudal. Pectoral nearly | length of head, the spine 

 feebly serrated on both sides, | or | the length of the tin. 

 Ventrals much nearer end of snout than caudal. Caudal nearly 

 I length of head. Olive-brown. 



Total length 220 millim. 



Sierra Leone and Liberia, S. Cameroon, Benito E. 



26. Clarias pachynema. 



Boulenger, Ann. & Mag. N. H. (7) xii. 1903, p. 438. 



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

 times. Head If to \k times as long as broad, smooth; occipital 

 process acutely pointed ; frontal fontanelle sole-shaped, about 

 twice as long as broad ; occipital fontanelle smaller, in advance 

 of occipital process ; eye very small, 3 to 4 times in length of 

 snout, 6 times in interorbital width, which equals about |- length 

 of head and exceeds width of mouth ; band of praemaxillary 

 teeth 2^ to 3 times as long as broad ; vomerine teeth conical, 

 forming a short curved band, which in the middle is as broad as 

 the praemaxillary band ; liarbels thick and papillose at the base ; 



