6, Genital apron a transverse oval, 

 posteriorly deeply concave in 

 profile. Scutal ptmctation 

 •usually small and regular, 



rarely coarse H. TRTJNCATUM 



Figxires~18« and 1^9 



Genital apron strongly bulging 



(convex) in profile 7 



7. Genital apron large, a widely trans- 

 verse oval or triangle. Scutal punc- 

 tations shallow, large ones restricted 

 to anterior half, small ones \d.dely 



scattered H. MARGINATUM 



Figures lau and lai 



Genital apron an elongate triangle 

 flanked by two lobes, giving it a 

 trilobed appearance. Scutal pvmcta- 

 tions usually numerotis, regularly 

 spaced, and mediunusize posteriorly 

 and centrally with two rows of larger 

 and deeper punctations among them; 

 with larger punctations anteriorly 



and in scapular fields H. IMFELTATUM 



Figures m and IVii 



_ 402 _ 



