524 Mr. G. A. Boulenger on some 



Adipose fin much longer tlian deep, nearly as long as its 

 distance from the first dorsal. A. 10 (3 rays rudimentary). 

 Pectoral spine f length of head, its inner border witli 4 or 5 

 strong retrorse spines. Ventrals extending a little beyond 

 origin of anal. Caudal deeply emarginate. Caudal peduncle 

 as long as deep. Skin villose on the sides of the body. 

 Pale brown ; a blackish band across the dorsal, another across 

 the pectorals ; ventrals and anal blackish. 



Total length 39 niillim. 



The two type specimens, from the Ubanghi, French Congo, 

 are preserved in the Paris Museum. 



3. Atopochilus. 



Atopochilus, Sauvag'e, Bull. Soc. Pliilom. (7) iii, 1878, p. 96, and N. 

 Arcli. Mus. (2) iii. 1880, p. 42. 



Body moderately elongate, feebly depressed. Anterior 

 dorsal entirely in advance of ventrals, formed of 1 spine and 

 6 branched rays ; an adipose fin opposed to the anal, which 

 is short; pectoral with a strong saline; ventral with 7 rays. 

 A cephalo-nuchal bony shield. Mouth large, inferior, sur- 

 rounded by a much developed, circular, papillose lip ; teeth 

 fine, slender, movable, truncate, bent at an obtuse angle and 

 forming a very broad band in the prgemaxillaries, this band 

 entirely in advance of the narrower band of mandibular teeth, 

 which are similar to the pra^maxillaries, but closer together; 

 conical teeth on the vomer; a barbel on each side, and another 

 pair on the posterior border of the lij) ; nostrils close together, 

 the posterior with a valve ; eyes with free border. Gill- 

 clefts short, confined to the sides. 



A single species. 



1. Atopochilus Savorgnani. 

 Atopochilus Savorgtiain, Sauvage, U. cc. pi. iii. fig, 3. 



Depth of body a little less than its greatest width, 5f times 

 in total length. Head depressed, 1^ as long as deep, a little 

 longer than broad, its length 3f times in total length ; upper 

 suiface of head a little rugose; snout broadly rounded, its 

 length 2^ postocular part of head ; nostrils nearer end of 

 snout than eye, the diameter of which is 4^ times in length 

 of head, 1 § in interorbital width ; buccal cleft straight, ^ length 

 of head ; band of mandibular teeth not half as broad as that 

 of prgemaxillaries ; lateral barbel \ length of head, more than 

 twice as long as posterior barbel. Occipito-nuchal shield as 

 long as broad, ending in two points. A striated, acutely 



