PHAGO.— NEOBOIIUS. 249 



of ventral, nearer end of snout than caudal. Anal III 7-S. Pectoral a 

 little more than f- or nearly j length of head. Caudal with pointed 

 lobes. Caudal peduncle 5 to 6 times as long as deep. Scales obtusely 

 keeled, 42-45 In, 2 between dorsal fin and lateral line series, 8 round 

 caudal peduncle. Brown above, whitish beneath, often with alternating 

 darker spots on the back and sides, or with a dark lateral band ; dorsal 

 and caudal orange or salmon-pink, usually with black bands, disposed 

 horizontally on the former, obliquely on each lobe of the latter; paired 

 fins and anal yellow or blackish. 



Total length 160 tmllim. 



Upper Congo. 



1. Tvpe. Kinshassa, Stanley Pool. M. A. Greshoff (C); 



Utrecht University (E ). 



2. Ad. 



Leopoldville, „ 



Capt. Wilverth (C.). 



3. Skel. 



?) rt 



)? 



4. Ad. 



Bangala Province. 



M. De Meuse (C). 



5. Ad. 



Irebu. 



M. P. Delhez (C). 



C. Ad. 



Kutu, Lake Leopold II. 



>* 



7, 8. Ad. & yg. 



Monsembe. 



Rev. J. H. Weeks (P.). 



9. Ad. 



Stanley Falls. 



Rev. W. H. Bentley (C.) 



11. NE0B0RUS. 



Bouleng. Ann. Mus. Congo, Zool. i.p. 78 (1899), and Poiss. Bass. Congo, p. 179 (1901). 



Snout long and narrow, pointed ; mouth large ; upper jaw movable 

 upwards ; maxillary very small, hidden under the prseorbital when the 

 mouth is closed ; prremaxillary and dentary with a single series of teeth, 

 the anterior large and canine-like, the laterals pointed, compressed, the 

 point directed backwards, some with a small secondary cusp. Cheek 

 partly naked ; nostrils near the eye, close together, separated by a valvular 

 flap ; gill-membranes narrowly united to isthmus. Body elongate, 

 compressed. Scales small, strongly ciliated ; lateral line straight, along 

 the middle of the side ; a scaly process at base of ventral. Dorsal fin 

 with 16 to 18 rays, behind vertical of base of ventrals ; anal with 15 to 

 19 rays ; adipose dorsal fin small. Vertebrae 43 (24 + 19). 



Congo, Casamanza River. 



Two species : — 

 Dorsal originating well behind vertical of 



base of. ventral ; Sc. 98-110 tt^. • 1. R- omatus, Blgr., p. 250. 

 Dorsal originating immediately behind 



vertical of base of ventral ; Sc. 90 j^. 2. 2\ r . qitctdrilineatus, Pcllegr., p. 251. 



