122 



MASTACEMBELID.E. 



Total length 370 millim. 



UbaiT'hi and South Cameroon — Types in Congo ISIasenm, Tervueren. 



1-2. Types. 

 3-4. Ad. 



Banzyville. 



Nyong 11., S. Cameroon. 



("apt. Royaiix (C). 

 G. L. Bates, E.sq. (C). 



Fiff. 75. 



Alttstiicemhelus ansonjii. 

 Type. I 



10. MASTACEMBELUS ANSOUGII. 

 Boulcng. Ann. & M.nr. N. H. (7) xv. 11105, p. 459. 



Depth of body 20 times in total length, length of liead S| times. 

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

 from liead | lengtli of latter. Snout 3^ times as long as eye, ending 

 in an appendage which is as long as eye ; mouth extending to below 

 centre of eye ; no pncorbital spine ; 2 or 3 strong praeopercular sp-nes. 

 Dorsal XXXIV 128; spines increasing in length to the last, which 

 measures 1^ diameters of eye ; distance between first spine and liead 

 1 length of latter. Anal II120. Caudal rounded. Pectoral i length 

 of head. Scales very small, 20 between origin of soft dorsal and lateral 

 line. Olive-brown above, yellow beneath, witli dark brown spots and 

 marblings ; three scries of large spots on the back, the lateral scries 

 couHuout into a wavy band on the tail; below these spots a straight 



