184 



CHAKACINIDiE. 



a. HYDROCYON VITTIGER. 

 llydroeyon vlttatus (non Casteln.), Bouleng. Ann. Mus. Congo, Zool. i. p. 24, 



pi. x. fig. 2 (1808), and Poiss. Bass. Congo, p. 142 (1901). 

 llydroeyon vittiger, Bouleng. Fish. Nile, p. 106 (1907). 



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

 Head 2i to 2| times as long as broad ; snout 1^ to 1-J times diameter 

 of eye, which is 3^ to 4 times in length of head and nearly equals 

 interorbital width; mouth extending to below anterior third of eye; 

 5 large teeth in upper jaw, 4 in lower. Dorsal II 8, originating above 

 ventral. Anal III 14. Pectoral -| to -f length of head. Caudal deeply 



Fig. 141. 



Hydrocyon vittiyer. 

 Type (A. M. C). -1 



forked, with long, pointed lobes. Caudal peduncle twice as long as 

 deep. Scales 56-57 ^f, 2 between lateral line and scaly process at base 

 of ventral. Olive-brown above, whitish beneath ; a blackish band along 

 the body on the second and third series of scales above lateral line as 

 far as adipose fin, where it drops one scale lower down ; adipose fin 

 black; caudal edged with blackish. 



Total length 340 millim. 



Congo. — Types in Congo Museum, Tervueren. 

 1. One of the types. Manyanga. Capt. Wilvcrth (0.). 



4. HYDROCYON GOLIATH. 



Bouleng. Ann. Mus. Congo, Zool. i. p. 23, pi. xi. (1898), and Poiss. Bass. Congo, 

 p. 141 O901). 



Depth of body 3f to i.\ times in total length, length of head 3f to 



