812 ME, G. A. BOULENGER ON THE FISHES [NoV. 15, 



estiemely long, compressed tube, feebly curved doMnwards, its 

 length 5 to 5| times postocular part of bead, and 20 times its least 

 depth, which equals diameter of eye; latter | interorbital width ; 

 lower jaw with a compressed dermal appendage nearly as long as 

 the eye; mouth very small; teeth very small, 7 in the upper jaw, 

 4 or 6 in the lower. Dorsal 32, originating above 8th or 9th ray 

 of anal, its length 1| in its distance from head. Anal 36, equally 

 distant from base of ventral and base of caudal. Pectoral pointed, 

 ^ length of bead, almost twice as long as ventral, and extending 

 almost to the extremity of the latter. Caudal scaled, with obtusely 

 pointed lobes. Caudal peduncle 8 times as long as deep, not quite 

 i length of head ; 79-81 scales in the lateral line, ~. in a transverse 

 iine on the body, jj^g in a transverse line between dorsal and anal, 



16 round caudal peduncle. Pale brownish above, whitish beneath. 

 Total length 610 millim. 

 Upper Congo. 



8. MOEMTBrS. 



Mormynis, part., Linn. Syst. Nat. i. p. 522 (1766), et auctor. 



ScropJiicepludus, Swains. Nat. Hist. Pish. ii. p. 187 (1839). 



Morviyrns, Mormyrodes, Gill, Proc. Ac. Philad. 1864, p. 139. 



Solenomormyrus, Bleek. Versl. Ak. Amsterd. (2) viu. 1874, 

 p. 368. 



Mormyrvs, Bouleng. Ann. Mus. Congo, i. 1898, p. 2. 



Teeth in the jaws small, notched, few (5-8 in the upper jaw, 

 8-12 in the lower) ; minute conical teeth on the parasphenoid and 

 on the tongue ; mouth terminal. Nostrils moderately far apart, 

 remote from the eye. Body moderately elongate ; veutrals equally 

 distant from pectorals and from anal, or nearer the former. 

 Dorsal much elongate, at least 2| as long as anal. Vertebrae 49- 

 54(12-13 + 7-10 + 30-31). 



Synopsis of the Species. 



I. Snout not more than ^ length of head. 



A. Dorsal originating in advance of base of 



ventral ; pectoral rounded. 

 D. 70 ; A. 18 ; caudal peduncle twice as long as 



deep, \ length of head ; pectoral ^ length of 



head 1. kasae/quisti Geoffr. 



T). r)2-66 ; A. 18-20 ; caudal peduncle twice as 



long as deep, nearly ^ length of head ; pectoral | 



length of head 2. anchieia Guim. 



D. 70 ; A. 20 ; caudal peduncle H as long as deep, 



I length of head ; pectoral a little more than J 



length of head 3. guentheri Blgr. 



B. Dorsal originating abore base of ventral; 



pectoral pointed, at least | length of head ; 

 caudal peduncle 2J as long as deep, f-f 

 length of head. 



D. 65; A. 21 ; eye nearly as long as snout 4. marrophthalmus Qtbr. 



D. 53; A.2.T; eye J length of snout 5. ows Blgr. 



