350 



SILUKID^. 



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 f 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. 



Phyllonemas tt/pus. 

 Type (Tr. Z. S. 1906). 



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 ; ventrals white. 



Total length 73 millim. 



Lake Tanganyika. 



Type. 



Niamkolo. 



Dr. W. A. Cunnington (C). 



19. LEPTOGLANIS. 



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



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

 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. 



