280 Mr. F. Bates's descriptions of 



coming^ more rapidly incurved ; apex truncate, front angles 

 small but distinct and acute ; base distinctly wider than 

 apex, broadly rounded ; hind angles very obtuse ; very 

 finely and not closely punctured ; lateral margins obsolete 

 in the middle : elytra as wide at base as base of prothorax ; 

 gently convex ; widest before the middle ; strongly and 

 somewhat sinuately attenuated behind; apex prolonged, 

 forming a very distinct mucro, which projects beyond the 

 abdomen by a length equal to the fourth ventral segment ; 

 finely seriate - punctate ; intervals delicately alutaceous ; 

 base rather deeply emarginate, keeled at each side for 

 more than half the width of each elytron, this keel strongly 

 thickened at the shoulder, beneath which is a well-marked 

 oblong depression rounded in front ; humeral angle acute 

 but not dentiform : prosternum distinctly impressed down 

 the centre between the coxee. 



$ . Not known to me. 



Long. 7^ lin. 



Precise locality unknown. 



DoUchoderus puncticeps, n. sp. 



$ . Larger than the preceding and entirely opaque ; 

 head strongly and thickly punctured ; epistomal suture 

 obsolete ; prothorax relatively shorter than in the pre- 

 ceding, more convex, and having several impressions 

 along the base within the margin ; lateral margins faint 

 (except at the base) but visible throughout ; base of elytra 

 keeled only at the shoulders ; elytral mucro as long as in 

 the preceding, but more obtuse at the apex ; prosternum 

 convex between the coxre ; legs and abdomen shining 

 black ; antennas pitchy black, and longer than in the 

 preceding. 



$ . Not known to me. 



Long. 8| lin. 



Precise locality unknown. 



DoUchoderus politipennis, n. sp. 

 $ . Head and prothorax dull black and obscurely punc- 

 tured ; elytra lustrous jet black and delicately seriately 

 punctured ; head quadrate, but little narrowed in front of 

 the eyes ; broadly and slightly sinuately truncated in 

 front ; epistomal suture well marked ; antennary orbits 

 rather convex, nearly smooth and shining ; prothorax 

 moderately convex ; a narrow margin at apex and the 

 thickened basal margin smooth and shining black ; sides 



