MASTACEM13ELUS. 



12'J 



along the upper surface of the liead, from between the eyes, followed by 

 a vertebral series of spots ; a dark band on each side of the head, passing 

 througli the eye, widening ou the temple, and sometimes prolonged on 

 the body above the lateral line ; a series of large brown spots along tlie 

 base of the dorsal and anul tins; lower parts whitish, uniform or spotted 

 or marl)led with brown. 



Total length 2G0 millim. 



Lake Nyassa and Upper Shire River. 

 1-2. Tviic- 



3-.'). -V.i. i**; yg. 



6. Il-r. 



7-.S. A.l.i<c li-T. 



Upper Shin'' R. 



Fort Joliiiston. 



S.W. Coast of L. Nyassa 



Ij. Nyassa hetween Knii 



dowe uml Karanira. 



A. Whyte, Esq. ((".). ; 



8ir II. H. Johnston (T.). 

 Dr. Percy Ken.hiU (C.).; 



Sir H. H.Johnston (P.). 

 Universities Mission. 

 A. Whyte, Esq. (U) ; 



SirH. H.Johnston (P.). 



Fig. 82. 



MdsUicemhelus fh ira nim. 

 Type. i. 



18. MASTAt'EMBELUS NIGROMARGINATUS. 



r.oulen;;. Tr. Zool. Soe. sv. 1808, p. 2;;. 



Depth of body 12 to 15 times in total length, length of head 7 to 

 85 times. Vent slightly nearer caudal tlian end of snout, its distance 

 from head 2| to 3 times length of latter. Snout 3 to 4 times as long 

 as eye, ending in an anpendcage whicli is \\ to 2 times as long as eye ; 

 mouth extending to beiow anterior border or anterior tliird of eye ; 

 no praeorbital or preeopercular spines. Dorsal XXVII-XXIX 95-100 ; 

 spines increasing in length to the last, whicli is li length of eye ; 

 distance between first spine and head 5 length of latter. Anal II 85-90. 

 Caudal rounded. Pectoral f length of head. Scales very small, 23-25 



vol.. IV. K 



