( 146 ) 



somewhat produced anad, the band extending laterallj- from near shonlder to 

 apical third, and being posteriorly rather better defined than anteriorly ; base of 

 elytra not brown. 



FroDS smooth, only with a row of punctures at the eye. Scape of antenna 

 shorter than in the species mentioned before, without large punctures ; apices of 

 segments more or less brown. Eye smaller than in the species mentioned. 

 Prothorax longer than it is broad at base, without distinct subajiical sulcus, 

 with a very few punctures anteriorly and posteriorly on disc, and a few more on 

 npperside of sjiine ; disc mesially shallowly impressed, the im])ression bordered 

 laterally by a very feeble elongate tubercle, mesial autebasal tubercle distinct, 

 not sulcate. Elytra punctured all over, the punctures in almost regular rows 

 above at base, largest behind shoulder, the basal ones with slightly grannliform 

 anterior edges ; a series of two or three more prominent granules on the mesial basal 

 convexity; only four rows of punctures between this series and thesnture; apex 

 of each elytrum obliquely rounded-truncate, the sutural angle being very obtuse. 

 No large punctures on femora. 



Length, 18 mm. ; elytra, 11 J mm. ; breadth, 5A mm. 



Hab. Benito (type) and Kuilu, French Congo. 



Two JcJ. 



33. Monochamus borussus spec. nov. 



3. Exactly \\Vs fnrinosa (1884) Bates, ?2nt. Mo. Mag. xxi. p. 16 (Gabun) 

 {Melanopolia), excejit in the third segment of the antenna not being clubbed, in 

 segments 3 to 11 being conspicuously white at base, and in the apex of the elytrum 

 being slightly sinuate. 



Ilab. t'ongo. 



One (?. 



We have four specimens oi farinnsa three SS, one ¥ from Lolodorf, 

 Cameroons, and from Benito, French Congo. In all four specimens the suture of 

 the elytra is more or less white. The anteunal segments .5 to 11 are brown, 

 not ringed with grey. The figure oi farinosa in "Waterhouse, Aid i. 170. f. 5, 

 is not very good, the base of the elytra and the scutellum erroneously being 

 represented as quite black and the two vittae of the i)ronotum as almost 

 parallel. 



34. Monochamus omias spec. nov. 



S ? . Brown-black ; pubescence of underside and legs olive-grey, with a silky 

 yellow gloss in side-light ; npperside variegated with clayish olive and black ; an 

 ill-defined patch on occiput at each side, an elongate patch or abbreviated vitta at 

 each side of pronotum, extending from base to beyond middle, a rounded basal 

 patch on each elytrum close to scutellum, a large mesial area not reaching lateral 

 margin, rounded in front on each elytrum, concave or straight behind, touching 

 suture, and a large ovate discal ante-apical spot, velvety black ; elytra, moreover, 

 dotted and marmorated with black and olive. Antenna brown, thrice (c?) or (?) 

 not quite twice the length, of the body, segments 3 to 7 grey at base, especially in ¥ . 

 Scutellum bordered with bright buff. Head with large punctures all over ; smooth 

 mesial line extremely fine. Scajie long, regularly conical, smooth in apjiearancc, 

 with a few punctures. Lower lobe of eye small, diameter two-thirds that of 

 cheek. Prothorax as long as it is broad at base, with very long and acute side-spine ; 

 rather densely ]iunctured in front ; depressed before middle, without distinct 



