800 me. g. a. boulengee on the pishes [jstov. 15, 



2. Stosiatoehinus miceops. 



StomatorJiinus microjps, Bouleng. Ann. Mus. Congo, Zool. i. 1898, 

 p. 9, pi. iv. fig. 2. 



Depth of body 4 to 4J times in total length, length of 

 head 4. Head 1 j to Ig as long as deep ; snout rounded, | to f 

 length of head ; mouth small, its width J to i length of head ; 7 

 teeth in the upper jaw, 8 in the lower ; eye extremely small. 

 Dorsal 18-20, about g as long as its distance from head. Anal 

 20-22, nearer base of caudal than base of ventral. Pectoral 

 obtusely pointed, | length of head, 1| length of ventral, extending 

 beyond base of latter. Caudal with rounded lobes. Caudal 

 peduncle twice as long as deep, about ^ length of head. 48-50 

 scales in the lateral line, ^^. in a transverse line on the body, g^^ 



in a transverse line between dorsal and anal, 16 round caudal 

 peduncle. Colourless. 



Total length 90 millim. 



Lower Congo. 



6. Mtomieus. 



Myoiayrus, Bouleng. Ann. Mus. Congo, Zool. i. 1898, p. 9. 



5 or 6 conical teeth ^ in the upper jaw, 6 compressed teeth in 

 the lower jaw, median pair very large and incisor-hke ; mouth 

 inferior, anterior to the eyes. Nostrils close together, distant from 

 the eye. Body short : ventrals nearer pectorals than anal. Dorsal 

 much longer than anal. Vertebrae 50 (14+4 + 32). 



1. Mtomxeus maceodon. 



Myomyrus macrodon, Bouleng. 1. e. p. 10, pi. vii. fig. 1. 



Depth of body equal to length of head, 4^ to 4| times in total 

 length. Head li to I5 as long as deep, with slightly concave 

 upper profile ; snout short, f length of head, strongly project- 

 ing beyond the mouth ; mouth small, its width ^ length of 

 head ; nostrils below level of eye, nearer end of snout than eye ; 

 eye very small, | interorbital width. Dorsal 41-42, slightly 

 longer than its distance from end of snout. Anal 30, originating 

 below 13th ray of dorsal, a little nearer base of caudal than base 

 of ventral. Pectoral obtusely pointed, | length of head, Ig length 

 of ventral, reaching base of latter. Caudal scaled, with rounded 

 lobes. Caudal peduncle 3 times as long as deep, | length of head. 

 88-90 scales in the lateral line, ^^J,? in a transverse line on the 



body, jg in a transverse line between dorsal and anal, 20 round 

 caudal peduncle. Pale brownish above, whitish below. 



Total length 240 millun. 



Lower Congo. 



1 Through a sciagraph for which I am indebted to Messrs. Gardiner and 

 Green, I have ascertained that the upper teeth are by no means so minute as 

 they look in the undissected specimen, where nothing but their small points 

 project from the thick lips. 



