80 Journal New York Entomological Society. [^'°'- x.W'i. 



near the base, the mesosternum divided so that the sternal cavity is 

 formed by the meso- and metasternum and the antennal pores inferior 

 in small pits. The genus Bnprestis may be distinguished by the fol- 

 lowing characters — mentum pale, membranous in front; mesosternal 

 suture distinct; posterior lateral metathoracic sclerite uncovered, tri- 

 angular; prosternal spine obtusely rounded at apex and obtusely 

 angulated behind the front coxre ; scutellum small ; elytra regularly 

 striate throughout, moderately narrowed posteriorly, usually marked 

 with yellow ; medium sized species. 



For those forms {adjecta, silicic oJ' is, aiirulenta, striata) having 

 the pronotum uniformly impressed along the middle, labrum more 

 chitinous and metallic at its basal part and a complete absence of true 

 elytral strice, with the substitution of a few longitudinal ribs sepa- 

 rated by wide and uniformly punctured intervals, Casey erects the 

 subgenus Cypriacis and for those {decora, salishurycnsis, apricans) 

 with elytra having no vestige of regular discal costje and but feeble 

 traces of impressed stride, but in their place a series of large perforate 

 punctures with the general surface closely, deeply and confusedly but 

 evenly crihrate with smaller punctures, while the prothorax seldom 

 has any trace of an impressed line, he has . erected the subgenus 

 Stereosa. This would divide Buprestis into three groups and ratify 

 Burke's conclusion arrived at through the study of the larvae. 



Burke states that the larvae of Bnprestis proper " have a small 

 rugose hood around the apex of the V-shaped markings on the dorsal 

 plate of the first segment and very slight rugose markings along the 

 groove on the ventral plate " and that in this group, " pupation takes 

 place in the spring and the beetles emerge soon afterwards." In the 

 subgenus Cypriacis, "the rugose hood around the apex of the V is 

 much larger and the rugose area along the ventral marking is broad. 

 Pupation in this group takes place during the summer and the beetles 

 remain in the pupal cells until the following spring." In the sub- 

 genus Sfcrcosa, '" there is no distinct rugose hood around the apex 

 of the V but almost the entire dorsal plate is rugose, as is also the 

 ventral plate. Pupation takes place in the summer and the beetles 

 winter over in the pupal cells." 



