340 COLEOPTERA OF NORTH AMERICA. 



Southern States, and the other two in Texas. The front legs 

 are elongated in the males. 



Group II. — Megalostomes. 



These species are more numerous, and easily distinguished by 

 the front coxae separated and less prominent, and the simple 

 claws ; they belong to the following genera: — 



Eyes not emarginate, oval ; 



Elytra with rows of punctures. Euryscopa. 



Elytra with confused punctures. Coscinoptera. 



Eyes emarginate, transverse. Megalostomis. 



To the last-named genus belong 31. pyropya Lac, and Cosci- 

 noptera major Crotch, and C. subfasciata Lee, found in Texas 

 and Arizona. One species of Coscinoptera extends into the middle 

 Atlantic States; all the others are western or southwestern. 



Group III. — Babise. 



The front coxte are contiguous in two of our genera, and the 

 claws appendiculate. The color is black or blue, with yellow or 

 red elytral spots. The form is stout and convex ; the eyes are 

 emarginate. 



Front coxae contiguous ; 



Epipleurse broad in front, not extending beyond the middle of the leiigtli, 

 outline broadly sinuous. Babia. 



Epipleurse narrow, not extending beyond the middle of the length, out- 

 line very strongly sinuous. Saxinis. 

 Front coxse separated (feebly in our species) ; 



Epipleurse very narrow, not extending beyond the middle of the length, 

 outline broadly sinuous. Urodera. 



The last genus differs from Babia by the prothorax being lobed 

 at base, which is sinuate and more strongly margined ; one species, 

 the Mexican U. crucigera extends into Arizona and New Mexico. 

 The other gense are widely diffused, and represented by very few 

 species. 



Tribe V.— CHLAIMYDIIVI. 



The species of this tribe are robust cylindrical insects of a dull 

 metallic, rarely black color, and covered with large tuberosities. 

 The antennae are short, serrate, and received in grooves at the 

 sides of the prosternum, and the legs are closely contractile into 



