MORMYKID-E. 155 



4 a. PETROCEPHALUS MICROPHTHALMUS. 

 Pellegr. Ball. Soc. Philom. (9) x. 1908, p. 2. 



Depth of body 2f times in total length, length of head 4 times. 

 Head as long as deep, with convex upper profile ; snout \ length of 

 head, rounded, projecting beyond mouth ; mouth below eye, its width 

 \ length of head ; about 10 teeth in upper jaw, 20 in lower ; eye 5 times 

 in length of head, 1\ times in interorbital width. Dorsal 19, originating 

 above 10th ray of anal, its length less than half its distance from head. 

 Anal 28, nearly equally distant from base of ventral and from caudal. 

 Pectoral -f length of head, reaching ventral. Caudal scaled at the base, 

 with pointed lobes. Caudal peduncle 3 times as long as deep, -f length 

 of head. 35 scales in lateral line, s between dorsal and anal, 10 round 

 caudal peduncle. Silvery, olive-brown above ; dorsal and anal blackish 

 anteriorly. 



Total length 95 millim. 



Ogowe. — Type in Paris Museum. 



Intermediate between P. lallayi and P. simus. 



Add :— 



5. PETROCEPHALUS SIMUS, Sauv. 



19-21. Ad. Bumba R. at Assobam, G. L. Bates, Esq. (C). 



S. Cameroon. 



22. Ad. Ngomo, Ogowe. Rev. E. Haug (C.) ; 



Paris Museum (E.). 



23-26. Ad., hgr., Quanza R. at Cunga, Angola. Dr. W. J. Ansorge (C). 



& yg- 



27-31. Ad. & hgr. Lucalla R. at Kelange, „ Dr. W. J. Ansorge (C). 



32. Hgr. Oyan R,, Niger. A. E. Kitson, Esq. (P.). 



33-35. Ad. & hgr. Geba R. above Bafata, Dr. W. J. Ansorge (C). 



Poitug. Guinea. 



36. Hgr. N. Sherbo district, Sierra N. W. Thomas, Esq. (P.). 



Leone. 



5 a. PETROCEPHALUS CUNGANUS. 

 Bouleng. Ann. & Mag. N. H. (8) vi. 1910, p. 539. 



Depth of body equal to length of head, o|- times in total length. 

 Head slightly longer thau deep, with convex upper profile; snout 

 rounded, strongly projecting beyond mouth, \ length of head ; mouth 



