292 Mr. F. Bates's descrij)tions of 



laterally compressed, more gradually declivous behind, 

 the striae much less distinctly punctured, the intervals 

 more convex and a little more strongly punctiu'ed ; head 

 finely but much more distinctly punctured ; the prothorax 

 is relatively smaller, not at all rounded at the sides, the 

 apical angle more acute, less obscurely punctured; the 

 outer joints of the antenna are narrower, 7 — 10 not 

 apically produced at the inner side ; prosternal process 

 more horizontal, more compressed behind the coxte ; 

 intercoxal process much less broadly rounded at apex. 

 Long. 14^ lin. 



Poi'phyrhyha, Fairm. 1. c. p. 137. 



Mentum trapezoidal, pilose, finely carinate down the 

 median line, not notched in front ; last joint maxillary 

 pal]^i cultriform ; head strongly transverse, much narrowed 

 in front of the eyes, sides slightly ciu-vedly contracted to 

 the anterior angles ; epistoma broadly and squarely trun- 

 cated at apex, the suture arched and very strongly 

 impressed ; front a little convex ; eyes large, broad, 

 obliquely produced above, nearly attaining the epistomal 

 suture ; antennas longer than head and prothorax ; joint 

 3 elongate obconic ; 4 — 6 gradually shorter and wider ; 

 7 — 11 much wider, strongly depressed, rather densely 

 clothed with short decumbent black hairs, triangulate 

 (except 11) and becoming gradually more transverse; 

 1 1 largest and broadly rounded at apex ; prothorax tra- 

 peziform, finely margined throughout, apex feebly arcuately 

 emarginate, the angles acute ; base bisinuate, produced in 

 the middle, forming a distinct lobe in front of the scu- 

 tellum ; hind angles rectangular, a little depressed ; 

 scutellum rather large, as long as it is wide at the base, 

 curvilinearly triangular ; elytra much wider than the pro- 

 thorax, appearing subquadrate, gibbous, shoulders very 

 prominent, with a depression behind ; base sinuately 

 emarginate ; sides broadly rounded at the shoulders, sub- 

 parallel behind them to behind the middle, thence rapidly 

 contracted to the apex ; prosternum a little abbreviated 

 and slightly compressed before, and not abruptly elevated 

 between, the coxre ; the process very wide, flat, horizontal, 

 broadly rounded behind, and closely fitting into a corre- 

 sponding cavity in the mcsosternum ; this latter short, 

 horizontal, vertical in front ; intercoxal process broad, 

 arching to the apex, which is very narrowly rounded ; 



