598 



Mr. G. J. Arrow on 



14(13). 



Posterior angles of the elytra not 

 sharp, (tinicolor j?roup.) 



Posterior angles of the pronotum 

 not or scarcely extending farther 

 back than the middle of the base . 



Posterior angles of the pronotum 

 produced beyond the middle of the 

 base. 



Large ; elytra not very convex, 

 with the outer margins strongly 

 flattened ; mesonotum entirely 

 opaque 



Small ; elytra highly convex, with 

 the outer margins not at all flat- 

 tened behind ; mesonotum smooth 

 and shining in front of the scutel- 

 lum 



6. vnicnstatuyn, sp. n. 



unicolor, Oliv. 



8. mimttum, Sternb. 



I have represented in outline the male genitalia of all 

 these eight forms (the figures being numbered to correspond 

 with those above), and descriptions of the three which are 

 new now follow. 



Hexodon patella, sp. n. (See fig. 3.) 



Rotundatum, fere circulare, marginibus lateralibus valde diktat is ; 

 riifura, supra toto opacum, ntroque elytro plaga autica puuctis- 

 que duabus antcapicalibus nitidis ornato ; capite (^clypeo excepto), 

 pronoti medio (linea mediaiia cxcepta) elytrorumque sutura et 

 liueis vagis longitudinalibus infuscatis : corpore subtus nitido ; 



