GEPHYllOGLANIS.— THYLLONEMUS. 



349 



times as long- as deep. Brownish above, white beneath ; a blackish spot 

 behind the gill-cover, fins blackish at the end. 



Total length 140 inillim. 



Upper Congo. — Type in Congo Museum, Tervueren. 



Fig. 270. 



1. One of the tyi)es. 



2. Hor. 



Gep7ii/ro(/lanis lonfi'ipinnis. 

 Type (A. M. C). f . 



Stanley Pool. 

 Upper Congo; 



31. P. Delhez (( '.). 

 Brussels l/niversitv 



18. PHYLLONEMUS. 

 Bouleng. Tr. Zool. Soc. xvii. IDOG, p. 552. 



Like Chri/sichtht/s, but without nasal barbel and with the maxillary 

 barbel fringed on both sides by a leaf-like membrane in its distal part ; 

 only vomerine teeth on the palate. 



A single species. 



1. PHYLLONEMUS TYPUS. 

 Bouleng. 1. e. pi. xxxii. fig. 3. 



Depth of body oh times in total length, length of head 3| times. 

 Head smooth, 1^ times as long as broad; occipital process very short, 

 widely separated from dorsal ; snout flat, broadly rounded, subtruncate, 

 projecting very slightly beyond mouth ; eye ^ length of head, equal to 

 interorbital width ; maxillary barbel If times as long as head, extending 

 beyond extremity of pectoral; outer mandibular barbel as long as head. 



