1078 



MR. G. A. BOULENGER ON 



[Dec. 10, 



gill-opening; outer mandibular barbel 1^ to 1^ times length of 

 inner, which measures | to | length of head. Gill -rakers few and 

 wide apart, 10 or 11 on anterior arch. Clavicles hidden under the 

 skin. Dorsal 65 to 78, its distance from occipital process r 'to | 

 length of the head, its distance from caudal equal to one or two 

 diameters of eye. Anal 57 to 64, nearly touching caudal. 

 Pectoral abovit | length of head, the spine very indistinctly 

 serrated and measuring about | the length of the fin. Ventral 

 1^ to 1| times as distant from caudal as from end of snout. 

 Caudal ^ as long as head. Dark brown above, lighter brown 

 beneath. 



Total length 285 millim. 



Lake Victoria to Lake Nyassa. 



13. Clarias poensis. 



Depth 

 T times. 



of body 8; 



sp. n, 

 times 



Head once and ^ as Ions: as broad. 



in total length, length of head 

 smooth ; occipital 

 process acutely pointed, as long as broad ; frontal and occipital 

 fontanelles very small, the latter in advance of occipital process ; 

 eye very small, 3 times in length of snout, 7 times in interoi^bital 

 width, which equals width of mouth and -^ length of head ; band 

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



Text-fie-. 252. 



Clarias poensis. 



conical, forming a curved band which is narrower than the 

 prjemaxillary band ; nasal barbel about |- length of head, 

 maxillary ^ length of head and reaching a little beyond base of 

 pectoral ; outer mandibular |, inner mandibular 4 length of head. 

 Grill-rakers few, 13 on anterior arch. Clavicles concealed under 

 the skin. Dorsal 76, its distance from occipital process |- length 

 of head, its distance from caudal fin a little greater than 

 diameter of eye. Anal 60, narrowly separated from caudal. 

 Pectoral ^ length of head, the spine very feebly serrated on both 

 sides and about | the length of the fin. Ventral once and | as 



