MASTACEMBELUS. 



1L!7 



than eye ; mouth extending to below anterior third or centre of eye ; 

 no prreorbital or prteopercular spines. Dorsal XXX-XXXII1 SO-90 ; 

 spines extremely short, last scarcely longer than eye ; distance between 

 first spine and head § to f length of head. Anal II 80-90. Caudal 

 munded-subacuminate. Pectoral J length of head. Scales very small, 

 1G to 18 between origin of soft dorsal and lateral line; latter formed 

 of a few tubules widely separated from one another. Brown or olive 

 above, with dark spots or marblings and a vertebral series of small 

 black spots ; a regular series of round or squarish dark brown spots on 

 each side of tlie back, sometimes confluent into a wavy band ; yellowish 

 on the sides, with a more or less distinct brown network ; dorsal and anal 

 fins spotted with brown. 



Total length 320 milliro. 



South Cameroon. 



1-5. Types. Ja R. at Bitye. G. L. Bates, Esq. (C). 



6-12. Ad. 

 13. Skcl. 



Fig. 80. 



Maslacemhdus batesii. 

 Type. 



16. MASTACEMBELUS MOORII. 

 Bouleng. Tr. Zool. Soc. xv. 1898, p. 22, pi. vii. fig. 1, Poiss. Bass. Congo, p. 493 

 (1901), and Tr. Zool. Soc. xvii. 1906, p. 575. 



Depth of body 14 times in total length, length of head 7-J times. Vent 

 equally distant from end of snout and from caudal, its distance from 

 head 1\ to 3 times length of latter. Snout 3 times as long as eye, 

 ending in an appendage which is a little longer than the eye ; mouth 

 extending to below centre of eye ; no pireorbital or pracopercular spines. 



