294 Mr. F. Bates's descrijdions of 



the last), aplcally a little produced, but rounded, within ; 

 eleven a little larger than ten, ovate ; labrum but little 

 extruded, the membranous hinge scarcely visible ; head 

 rather large, not strongly transverse, not narrowed nor 

 shortened in front of the eyes, deeply imbedded in the 

 prothorax, perfectly plane, or flattened, and gradually 

 sloping from the vertex to the anterior border; a well- 

 marked longitudinal furrow extending down the middle 

 of the front and nearly across the epistoma ; antennary 

 orbits not prominent (convex), obliquely rounded, the 

 sides continuous with the sides of the epistoma ; this latter 

 rapidly narrowed to the front, the angles rounded and 

 convex above,* the apex lightly emarginate, the suture 

 angulate, faintly impressed, and terminating at each side 

 at some distance from the apical angle ; eyes above large, 

 rounded, not at all depressed, not projecting, nor forming 

 a conical outline, laterally; the head, behind the eyes, 

 being abruptly and strongly contracted; prothorax very 

 finely punctured, strongly transverse, deeply arcuately 

 emarginate in fi.*ont, front angles scarcely depressed ; base 

 much wider than apex, sides a little curvedly contracted 

 at the base, the apex as strongly margined as the sides ; 

 the sides of the elytra are somewhat rapidly, curvedly 

 expanded direct from the basal angle ; the flanks of the 

 prothorax and of all the sterna, and the epipleural fold, 

 are perfectly smooth and impunctate ; the prosternum is 

 abbre%aated before, and is abruptly elevated between, the 

 cox£e, but this abbreviation does not extend nearly up to 

 the cox£e ; the prosternal process is moderately wide, pro- 

 longed and gradually tapering behind ; intercoxal process 

 wide, apex broadly rounded. 



There may be slight modifications of the above characters 

 in some of the species, but nothing that will at all affect or 

 lead to the confounding of them with any of the following 

 new genera. 



Tetrapliyllus j)yvopterus, Fairm. 1. c. p. 137. 



Very near fo?-mosus, from which it differs in being 

 smaller, the elytra a little more gibbous, and having a 

 more rounded outline, the colour bright coppery, with 

 scarcely a tinge of green ; the antennary orbits a little 



* In some species (acerbi/s, Coq., &c.) the front angles of the epistoma 

 are elevated, forming a larfre, blnnt, recurved tooth, the space between 

 being rather deeply, arcuately emarginate. Perhaps this may be sexual. 



