SILURID^. 



307 



Pectoral a little more than -| length of head. Ventral a little shorter 

 than pectoral, far behind base of dorsal. Caudal feebly emarginate. 

 Caudal peduncle IJ times as long as deep. Reddish brown above, 

 spotted Avith blackish, dirty white beneath. 



Total length 195 millim. 



Lorian Swamp Basin, British East Africa. 



1. Type. Ensso Mai-n, a swift mountain-stream A. B. Percival^ Esq. (P.). 



flowing into the Lorian Swamp. 



Distinguished from A. grandis by the pointed snout, the longer 

 caudal peduncle, and fewer anal rays. 



oti. AMPHILIUS JACKS0:NII. 

 Bouleng. Ann. & Mag. N. H. (8) x. 1912, p. 602. 



Depth of body 7 times in total length, length of head 4| times. Head 

 much depressed, slightly longer than broad ; snout rounded, ^ length 

 of head ; eye small, 6 times in length of head, twice in inter- 

 orbital width ; posterior nostril much nearer eye than end of snout ; 



maxillary barbel slightly shorter than head, just reaching root of 

 pectoral ; outer mandibular barbel f length of head, inner \. Gill- 

 rakers rather long, 7 on lower part of anterior arch. Dorsal I 6, much 

 nearer end of snout than root of caudal. Adipose dorsal 3 times 

 as lono- as deep, Ih times as long as rayed dorsal, twice its distance 

 from latter. Anal III 7. Pectoral as long as head. Ventral as long- 

 as pectoral, well behind base of dorsal, equally distant from end of 



X 2 



