MASTACEMBELUS. 



121 



with round yellow spots surrounded by a dark network ; alternating 

 dark and light bars may be present at the base of the anal fin. 



Total length 190 millira. 



Cameroon, Lower Niger, Sierra Leone, Chad Basin. — Types in Stock- 

 holm Museum. 



1. 



One of the 

 types. 



Bonge, Cameroon. 



Mi 



\ Y. Sjostedt (C.) ; 

 Stockholm Museum (P.) 



2- 



-3. Ad. 



Kribi R., S. Cameroon. 



G. 



L. Bates, Esq. (0.)- 



4. 



Ad. 



Nyong R., 





)) 



5. 



Ad. 



Ogata, Lower Niger. 



Di 



-. W. J. Ansorge (C). 



6. 



Ad. 



Abo, „ 





51 



7. 



Ad. 



Agberi, 





H 



8- 



■9. Hgr. 



Gregani, 





•>■> 



10. 



Ad. 



Assay, 





11 



11. 



Ad. 



N. Sherbo District, Sieri 



•a Leone. N. 



\\\ Thomas, Esq. (P.). 



12. 



Ad. 



Victoria, Sierra Leone. 





5) 



Fie. 74. 



-tte'_ -;-„.- . k. --_, 



Maslacemhelus goi-o. 

 Type(A.M.C.). J. 



9. MASTACEMBELUS GORO. 

 Bouleng. Ann. Mus. Congo, Zool. ii. p. 54, pi. xv. fig. 3 (1902). 



Depth of body 16 to 20 times in total length, length of head 8 to 

 10 times. Vent nearly equally distant from eye and from caudal, its 

 distance from head 3 to 4 times length of latter. Snout 3 times as 

 long as eye, ending in an appendage which is 1^ times as long as eye ; 

 mouth extending to below anterior border of eye ; no prteorbital spine ; 

 two prseopercular spines. Dorsal XXIX-XXXII 80-85; spines very 

 short, last lh times as long as eye ; distance between first spine and 

 head nearly equal to length of latter. Anal II 80-85. Caudal rounded. 

 Pectoral about -§- length of head. Scales very small, 16-18 between 

 origin of soft dorsal and lateral line. Dark grey-brown above, with 

 darker marblings or vermiculations, yellowish or dirty white beneath ; 

 a series of large dark spots may be present on each side of the anterior 

 part of the back; dorsal and anal fins blackish, with or without small 

 white spots or marblings; anal edged with white; pectoral whitish, 

 with black spots. 



