126 



]\[ASTACEMBELID.E. 



long as eye, ending in an appendage which is about 1| times as long as 

 eve ; mouth extending to below anterior border of eye ; no prajorbital 

 or prfpopercular spines. Dorsal XXV-XXVIII 73-80 ; spines increasing 

 in length to the last, which is about 1^ times length of eye; distance 

 between first spine and head equal to or a little greater or a little less 

 than length of head. Anal II 80-90. Caudal rounded. Pectoral f to 

 i length of head. Scales very small, 15 to 18 between origin of soft 

 dorsal and lateral line ; latter formed of a few tubules widely separated 

 flora one another. Brown, more or less distinctly reticulate with 

 darker ; the reticulation enclosing light spots ; dorsal and anal fins in 

 the adult dark brown or black, edged with yeUowish, in the young 

 M'hite, spotted with black; pectoral with small dark spots or cross-bars. 



Total length 310 millim. 



South Cameroon to Portuguese Congo. 



Gaboon. 



1-2, 3. Types. 



4. Hor. 



5. Hor. 

 G. Ad. 

 7. Ad. 

 8-12. Ad., lig 



Lilinbarciio, Oj^owc. 

 Benito River, Snanish Guinea. 

 EEiilen, S. Camoroon. 

 Lundi), Luali R., Portuguese 

 Coiiii'o. 



R. B. N. Walker, Esq. (C). 



Miss Kingsley (C). 

 G. L. Bates, Esq (0.) . 



5? 



Dr. W. J. Ansorge(C.). 



Fip;. 7U. 



MasUicemhehis f.avomarijinaius. 

 Type. f. 



15. MASTAdEMBELUS BATESII. 

 Bouleiig. Ann. & Mag. N. H. (8) viii. 1911, p. G37. 



Depth of body 15 to 16 times in total length, length of head 8 to 9 

 times. Vent nearly equally distant from end of snout and from caudal, 

 its distance from head 3 to o\ times length of latter Snout 3 to 4 

 times as long as eye, ending in an appendage which is a little longer 



