234 CHARACINID.E. 



part of anterior arch. Dorsal II 8, originating just behind vertical of 

 root of ventral, at equal distance from anterior border of eye and from 

 caudal, longest ray a little shorter than head. Anal III 19. Pectoral 

 as long as head, reaching ventral. Caudal forked. Caudal peduncle 

 as long as deep. Scales 33 ^f, 2 between lateral line and root of ventral. 

 Silvery, back greyish green ; a large black spot on caudal peduncle, 

 extending on median rays of latter; anterior border of dorsal and 

 posterior part of caudal blackish. 



Total length 145 raillim. 



Kingani Kiver, German East Africa. — Described from the type in 

 the Berlin Museum. 



4. PETERSIUS TANGENSIS. 

 Lonnb. in Sjostedt, Kiliuiandj.-Mcru Exped., Fish. p. 2 (1907). 



Depth of body 3| to 4 times in total length, length of head 4 to 4 J 

 times. Head twice as long as broad, considerably longer than deep ; 

 lower jaw projecting slightly beyond snout ; snout shorter than eye, 

 which is 2 J to 2| times in lengtli of head ; interorbital width 2| times 

 in length of head ; maxillary extending to below anterior border of eye ; 

 outer prcemaxillary teeth 4, alternating with these of inner row, 8 in 

 number; 8 teeth in lower jaw. Grill-rakers short, 16-17 on lower part 

 of anterior arch. Dorsal II 8, originating behind vertical of base of 



Pcteisius tauf/cnsis. 

 Type. 



ventral, at equal distance from anterior border of eye and from caudal. 

 Adipose fin very small. Anal III lG-17. Pectoral a little shorter than 

 head, not quite reaching ventral. Caudal deeply forked. Caudal 

 peduncle about IJ times as long as deep. Scales 35-36 p, 2J or 3 

 between lateral line and root of ventral. Silvery, back olivaceous ; a 

 darker silvery lateral band. 

 Total length 57 millim. 



