350 SILURID^E. 



twice as long as inner; vomerine teeth in a short transverse series. 

 Dorsal I 6, a little nearer end of snout than root of caudal ; spine short 

 and feeble ; longest rays f- length of head. Adipose dorsal a little 

 shorter than its distance from the rayed dorsal. Anal 12, opposed to 

 adipose dorsal, which is about |- as long as its distance from rayed dorsal. 

 Pectoral spine \ length of head, strongly serrated on inner border. 

 Ventral inserted a little behind vertical of dorsal, not reaching anal. 



Fig. 271. 



Phyllonemus tijpus. 

 Type (Tr. Z. S. J 90(5). 



Caudal peduncle a little longer than deep. Caudal deeply notched. 

 Brown above, white below ; maxillary barbels blackish at the end ; 

 dorsal dark brown, adipose fin dark brown, white behind ; caudal 

 brown, each lobe tipped with white; anal white, dark brown at the 

 base ; veutrals white. 



Total length 73 millim. 



Lake Tanganyika. 



l . Type. Niamkolo. Dr. W. A. Cunnington (C). 



19. LEPTOGLANIS. 



Bouleng. Ann. Mus. Congo, Zool. ii. p. 42 (1902). 



Body more or less elongate, feebly compressed. Dorsal and anal tins 

 short, the former consisting of a spine and 5 branched rays ; an adipose 

 dorsal fin. Pectoral fin expanded horizontally, with a spine. Ventral 

 fin with 6 rays, behind dorsal. Three pairs of barbels : maxillary and 

 two mandibulars. Nostrils widely separated from each other. Eye 

 superior, without free border. Mouth small, with minute teeth ; palate 

 toothless; maxillary much prolonged, movable, connected with the 

 head by a membranous fold. Gill-membranes narrowly attached to 

 isthmus. Air-bladder large, free. 



Tropical Africa. 



