PARAPHKACTURA. — TRACHYGLANIS. 507 



head, pointed, projecting a little beyond the mouth ; space between the 

 nostrils a little nearer eye than end of snout ; eye directed upwards, 

 7 times in length of head, 1^ to 1-| times in interocular width ; 

 maxillary barbel verrucose, j to f length of head, outer mandibular 

 j to ^, inner mandibular | to }; occipital process very narrow, not 

 reaching interneural shield. Dorsal I 6 ; first ray longest, as long as 

 head ; second dorsal very small. Anal II 7. Pectoral as long as head, 

 not reaching ventral ; latter also as long as head, not quite reaching 

 anal. Caudal with crescentic notch. Caudal peduncle depressed, about 

 ^ total length. 24-26 dorsal and 18-20 ventral scutes, the last 

 6 united on caudal peduncle. Brown above, speckled or vermiculate 

 with black, white beneath ; fins spotted with blackish. 



Total length 95 millim. 



Ubanghi. — Types in Congo Museum, Tervueren. 

 1-2. Two of the types. Banzyville. Capt. Royaux (C). 



37. TRACHYGLANIS. 



Bouleng. Ann. Mus. Congo, Zool. ii. p. 48 (1902). 



Body elongate, feebly depressed, with extremely slender caudal 

 peduncle ; two series of rough, bicarinate bony scutes on each side, 

 uniting on the caudal peduncle. Two short dorsal fins, the first just 

 in front of the ventrals and composed of a spine and 6 branched 

 rays, the second very small and formed of thin rays preceded by a spine. 

 Anal short. Pectoral with the outer ray spinous ; ventral with 6 rays. 

 No occipito-nuchal shield ; a spine-like process of the eoracoid, under 

 the base of the pectoral fin. Mouth small, inferior, with feebly 

 developed lips ; small conical teeth in both jaws ; no vomerine teeth ; 

 a maxillary and two mandibular barbels on each side. Nostrils rather 

 close together ; eye small, without free border. Gill-openings broadly 

 interrupted at the isthmus. Air-bladder much reduced. 



Ubanghi. 



1. TRACHYGLANIS M1NUTUS. 

 Bouleng. t. c. p. 49, pi. xiv. fig. 3. 



Depth of body 10 to ] 1 times in total length, length of head 5 to 5f 

 times. Head much depressed, 1^ times as long as broad, rugose above, 

 with finely denticulate ridges, two of which extend from the snout to 

 the median occipital process, embracing two large cranial fontanelles ; 



