88 PROCEEDINGS OF THE ACADEMY OF 



Aaa. Apex of elytra not produced, entire. 

 B. Last ventral segment not bicostate. 

 C. 9 liist segment tridcutate. 



B. % intermediate tibiae dentate. tenebrosa. 



Bd. % tibise simple. californica. 



Cc. 9 If^st segment rounded. 



B. Elytra irregularly tubcrculate. 



E. Greenish, thorax not very uneven. Mlaris. 



Ee. aeneous, thorax dilated in front strongly costate. 



tuierculata. 

 Bd. Elj'tra with traces of rows of punctures. 



E. Thorax hardly dilated, discoidal costaj straight, ap- 

 proximate, punctulata. 

 Ee. Thorax dilated in front, costae more dis. | luguhris. 

 tinct. j aexualii. 

 Bh. Last ventral segment bicostate, % apex truncate. pectorosa. 

 AA. Apex of elytra slightly produced, sutural angle mucronate. 



* Presternum sulcata. Hornii. 



** Prosternum convex. mutica. 



Poecilonota. P. erecla, Gory, is merely P. cyanipes, Say. 



Bupreslis. Linnpeus' name should be kept for this division of 

 the genus containing A. rustica. 



B.fasciata, Cy-jilagiata, and Lancjii should be placed in the second 

 group with the J' tibiie simple, and in my opinion must form 

 one species; at any rate B. fasciata and B. G-jylagiata are sexes, 

 while B. Langii differs a little in general form, but in no definite 

 vvay. Leconte's group above is most troublesome, and further 

 observations are still necessary to settle the species. In B. lineata 

 and B. consularis the prosternum is more or less yellow, and the 

 elytra bidentatc and in the others truncate; B. lasviventris has a 

 less strongly punctate abdomen,' though I do not lay great stress 

 on this ; B. aUernans=Nu(talli ; and all the immaculate species 

 certainly seem to me to form one species under the name B. ma- 

 culiventris, Say. The species allied to B. striata are equall}- un- 

 satisfactory. B. radia7is=:lauta J*, which is known from B. striata 

 by the smooth cosine ; but all transitions occur between costate 

 and striate examples, as in B. maculiventris. B. adjecta seems 

 to occur with tlie elytra truncate also, and one or two new inter- 

 mediate species exist in cabinet. 



Cinyra erythopa is recognized as exotic. 



Xenorhipis Brendeli, Lee, will have to be added here. 



