( 151 ) 



smooth, reaching to middle of prothorax ; segment 3 half as long agaia as 4, a little 

 longer than scape, In little over twice (?) or not quite thrice (S) as long as broad, 

 5 to 10 gradually shortening, 11 as long as segment 6 or 7. Prothorax as broad 

 at base as long ; side-spine acute, curving backwards ; apical and snbapical sulci as 

 strongly and sharply impressed as the basal ones, the suliapical one imperceptibly 

 curved backwards in middle. Scntellum rounded-triangular. Elytra truncate at 

 base, with the siioulder-anglcs rounded, bnt the shoulders not receding ; punctatc- 

 striate, the i)unctnres large everywhere, not seriate at the apex ; tlie edges of the 

 most basal jmnctures of the four or five rows nearest to scntellum raised to granides ; 

 no granules behind shoulder ; apex sinuate as in Tomolamia irrorata, witli both 

 angles acuminate, but tlie exterior tooth longer than the sutural one. Intercoxal 

 process of prosternum evenly arclied, sulcate ; that of mesosternnm vertical in front, 

 comj)ressed, tnberculate. 



Length, 12 mm.; elytra, 8i mm.; breadth, 4 mm. 



Bab. Victoria, Cameroons (Voss), ti/pe, and Benito, French Congo. 



One p.iir. 



The species does not fit well in either Oxyhamm'is, Tomolamia, or Prorlomitia. 



Melanopolia (1S81) Bates, Ent. Mo. May. xxi. p. lo {\-\\<c: frenata). 



Syn. : Griphamiuus (18114) Jord., Nov. ZooL. i. p. 195 (type : Ugulus = fremitu). 



This genus resembles Tragocephala and Steniotomis in the lobate bases of the 

 prothorax and of the elytra, in the broad, s(iuare mesosternal process, and in the 

 horizontal apex of the scntellum ; bnt the cicatrix is as in Monochamus. The 

 species described by Bates, I.e., as Melanopolia faritiosa and contexa belong to 

 Monochamus, though they resemble Melanopolia very much in colour, and have 

 even the clubbed third auteanal segment found in the species described below. 

 They are close to Monodtamas gripkus (1894) Jord., /.'/., and to melaleuca and 

 omias described above. 



Melanopolia frenata 0884) Bates, I.e. (c?, not ?.) 



Syn. : Griphnminus ligatun (18'J4) Jord., l.i-. (cj ? ). 

 Bates described as frenata the sexes of two species, his ? being the insect 

 characterised hereafter. 



We have both sexe.s of each. 



43. Melanopolia cincta spec. nov. 



(??. Closely resembling /;v?/?<(^«, but differing in tlie third antennal segment 

 being (dubbed and tiie incrassate part hairy, in tlie anteunal segments .5 to 11 not 

 being white at bases (being here only greyish, or being all brown), and in tlie 

 obliijue vitta extending from slionlder to suture of elytrum being sejiarated into 

 more or less confluent spots and therefore being much less consim'uons. 



IJab. Benito, French Congo, ti/j<e, and N'Doro, Upper Ogowe River. 



Five d<J,six ? ?. 



It is a most curiims fact tliat Melanopolia cincta -mA frenata differ in the same 

 way as .MonochamuH /jon/.s.nts m\A farinom ; and that among tiie likewise white and 

 black species o'i Aeriiloeejiliala tliere are two s])ecies which dift'er also essentially in 

 the one having segments O to II (if the iintenna white-ringed and the otlier having 

 them simply brown. 



