JIASTACKMHELUS. 



Vl'i 



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

 no pra^orbital or prfeopercnlar spines. Dorsal XXX-XXXIIl 80-UO ; 

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

 first spine and head § to f len^jth of head. Anal U 80-90. Caudal 

 rounded-subacuniinate. Pectoral I length of head. Scales very small, 

 IG to 18 between ori<,nu of soft dorsal and lateral line; latter foimed 

 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 the back, sometimes confluent into a wavy band ; yellowish 

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

 fins spotted with brown. 



Total length 320 millim. 



South Cameroon. 



l-.i. Types. 

 fi-12. Ad. 

 13. Skol. 



Ja 1{. at Bitvo. 



G. L. Bates, Esq. (C). 



Fig. SO. 



jilasUtcciiihclus baksii. 

 Type. 



IC. MASTACEMBELUS MouliJI. 



Jimilcii;,'. Tr. Zool. Soc. xv. l.s'.I.S, p. 22, pi. vii. fig. 1^ Poiss. Bas.s. CoiigD, p. VJ'.i 

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



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

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

 head 2h to 3 times length of latter. Snout 3 times as long as eye, 

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

 extending to below centre of eye ; no pnuorbital or prieopercular spines. 



