BY EEV. T. BLACKBURN. 221 



the lateral margin of the elytra (viewed from the side) is straight 

 or very nearly so; and the hind angles of the prothorax are 

 constantly rounded off. 



The following is the best scheme I can suggest of tabulating 

 the characters of these subgroups : — 



A. Head at most only moderately produced in front of the eyes. 



B. Elytral seriate and interstitial puncturation not (or at least only 



on a small part of the surface) both coarse and equally coarse. 



C. The punctui'es in the elytral series not particularly widely 



spaced inter se. 



D. Prothorax with well defined sublateral fovece, or elytra with 



the suture flat throughout (usually both these characters;. 



Size not small (at least long, more than 3 lines) i. 



DD. Prothorax without w^ell defined sublateral fovece; elytral 



suture more or less carinate in at least the apical quarter. 



E. Humeral angle of the elytra (viewed from tlie side) not 



much below level of the hind angle of prothorax, or 



lateral margin of elytra (viewed from the side) sinuate, 



or hind angles of prothorax well defined iv. 



EE. Humeral angles of elytra (viewed from the side) much 

 below hind angles of prothorax, lateral margin of 

 elytra (viewed from the side) straight or nearly so, 



hind angles of prothorax rounded otf. •. . . . v. 



CC. The punctures in the elytral series very widely spaced one 



from another; elytral suture flat Ii. 



BB. Elytral seriate and interstitial puncturation both coarse and 



equally coarse iii. 



AA. Head very much produced in front of the eyes; size very small 



(at most long. '2| lines) vi. 



SUBGROUP I. 



This subgroup is not distinguishable by a single reliable 

 character from all the other subgroups, but nevertheless it 

 appears to me a very natural aggregate, and easily separated 

 from each of the other subgroups individually. With the 2nd 

 it is quite incapable of confusion on account of the seriate punc- 

 tures of the elytra being placed quite closely in the rows; from 

 the 3rd it is equally distinct on account of the elytral puncturation 

 being either («) entirely tine or (b) much finer on the interstices 



