156 



ADDENDA, VOL. I. 



below anterior border of eye ; its width \ length of head ; teeth 

 bicuspid, 11 in upper jaw, 24 in lower ; nostrils near lower border 

 of eye; eye \ length of head, § interorbital width. Dorsal 27, 

 originating above first ray of anal; its length \\ times in its distance 

 from head and a little greater than its distance from caudal. Anal 32, 

 equally distant from base of ventral and from base of caudal. Pectoral 

 pointed, § length of head, not quite twice as long as ventral, extending 

 beyond base of latter. Caudal scaled at the base, upper lobe pointed, 



Fig. 104. 





Petrocephalus cunganus. 

 Type. 



lower rounded. Caudal peduncle 3 times as long as deep, f length 

 of head. 47 scales in lateral line, ^ in transverse series on body, 

 j^ between dorsal and anal, 12 round caudal peduncle. Brown above, 

 silvery beneath ; fins brownish. 



Total length 110 millim. 



Angola. 



1. Type. Quanza R. at Cunga. Dr. W. J. Ansovge (C). 



Near P. simus. but agreeing with P. degeni in the anal not originating 

 in front of the dorsal, and in the more elongate body. 



8. PETROCEPHALUS STUHLMANNL Blgr. 

 Add:— 



2. Hot. Kafue R., Zambesi. Dr. J. D. F. Gilchrist (P.). 



The species is also recorded from Leydsdorp, Transvaal, by Gilchrist 



and Thompson, Ann. S. Afr. Mus. xi. 1913, p. 326. 



