S)14 MR. G. A. K. MARSHALL OX [Dec. 11, 



the rostrum less naiTOwed in front, in their less transverse 

 prothoiux, which is ti-nncate at base and apex, and in theii- more 

 rotund elytra. 



iSTRoriiosoMus SULCATIFRONS, sp. nov. (Plate LXVI. fig. 2.) 



Long. 7|— 9, lat. 41-54- mm. 



Coloui- black, with dense grey or brownish scaling, prothorax 

 ^v•ith a darker subdenuded central stripe, each elytron usually 

 with two veiy faint paler spots placed obliquely about middle. 



Head broad, plane, with seven broad and deep sulci, separated 

 by nari'ow cai-infe and becoming shorter outwardly ; eyes very 

 Ijrominent, projecting backwai-ds and subacuminate posterioily. 

 Rostrum, separated fi'om head by a nai-i'ow curved sti'ia which is 

 obsolete latei'ally, strongly nai'i'owed anterioi'ly, its sides sinuate 

 near apex ; uppei- suiface with four deep sulci which are mu.ch 

 broader than those on head. Antenna' fuscous, joints 1 and 2 of 

 funicle subeqvxal. Prothorax more than twice as broad as long, 

 apex sinuate, a little nari-ower than the base which is broadly 

 curved, sides dilated into a sharp angular projection slightly 

 behind middle ; upper surface convex, coaivsely and longitudinally 

 rugose, with a complete smooth narrow central carina. Ehjtra 

 broadly ovate, jointly sinuate at the base, with the basal angles 

 projecting a little beyond the base of the prothoi'ax and subacute ; 

 sides rounded, broadest rather behind middle ; upper surface 

 convex, with broad sulci containing i-ows of deep punctures ; the 

 intervals convex, smooth, finely aciculate and each with two 

 irregular i-ows of very short subrecumbent seta\ Legs moile- 

 I'ately stout ; anterior tibia3 straight, but with the intei'nal apical 

 angle sharply produced. 



Orange River Colony : Bothaville {.Dr. IT. Bramis). Natal : 

 Oharlestown (.4. ?J. llariland). Traxsvaal : Johannesbui-g 

 {H. Fry). 



Type in the British Museum. 



In the twelve examples before me I cannot detect with cer- 

 tainty any external sexual difierences. 



Of the desci'ibed S. African 6'trophosoiiti oidy >S'. strigifrons 

 Fiihv. and S. phcmbeus Ffdir. (wliich ai-e doubtfully separable) 

 exhibit a series of sulci on the forehead. But in these insects 

 the sulci are more numerous and much shallowei- ; in them also 

 the prothorax is not angulated laterally, the elyti^a are much 

 more elongate, and the stiite are finer and less coai'sely punctured. 



Strophosomus AcuTicoLLis, sp. uov. (Plate LXYI. fig. 3.) 



Long. 4|-6|, lat. 2|-3-i- mm. 



Colour black, covered with dense miiform gi'ey scaling and 

 devoid of true seta?. 



Head plane, closely punctured and with a deep narrow centi'al 

 furrow ; eyes very prominent, directed backwai'ds and acuminate 

 posteriorly. liostrum -separated fi'om the head by a narrow 



