CITIIAEIDITJM. 



289 



19. CITHARIDIUM. 



Bouleng. Ann. & Mag. N. H. (7) ix. 1902, p. 141. 



Snout short ; mouth wide, terminal, with a marginal series of very- 

 minute pointed teeth ; maxillary very small, toothless. Cheek partly 

 naked ; nostrils close together, separated by a valvular flap ; gill- 

 membranes free from isthmus. Body short, strongly compressed. 

 Scales moderately large, strongly denticulate; lateral line straight, 

 nearer the dorsal than the ventral outline ; a scaly process at base of 

 ventral fin. Dorsal fin with 17-18 rays, above the ventrals ; anal with 

 20-21 rays; a rather large adipose dorsal fin. 



Niger. 



1. CITH.4RIDIUM ANSORGII. 



Bouleng. I. c. pi. iii. 



Depth of body twice in total length, length of head 3 times. Head 

 twice as loDg as broad, flattened above, raised at the occiput ; snout 



Pig. 222. 



Clthnr'tdivm ansorgii. 

 Type(Ann. & Mag. N. IL 1902). f. 



twice as broad as long, not projecting beyond lower jaw, as long as eye, 

 which is infero-lateral, of to 4 times in length of head and 2 to 2 J times 

 VOL. I. u 



