NOUTH AMEUH'AN ( ( )MX)l"rKRA. 15 



<'. iiiiicoreai Lw.. I'roc. Acad. 1858, p. 83. 



Somewhat more robust than axillaris, slightly more aeneous and 

 with the pubescence more abundant, so as to nearly conceal the sur- 

 face. The humeral red spot is not conspicuous. l)ut covers the um- 

 lione. The punctuation of the middle of the thorax is not dense, 

 but moderately (H)arse as compared with canella. The labrum is 

 piceous, slightly paler at the sides. Legs entirely piceous. Length 

 .22 inch. ; 5.5 mm. 



Occurs in So. California, extending to Tucson, Ariz. (Wickham) 

 €. Sl^uesceil!^ Crotch, Proc. Acad. 1873, p. 29.— Piceous black, slightly 

 bronzed, moderately shining, very sparsely pubescent. Thorax not closely punc- 

 tate at middle, the punctures more distant than their diameters, at sides more 

 densely punctured. Elytra distinctly suh.striately and moderately densely punc- 

 tate. Length .18 inch. : 4.5 mm. 



With a form resembling axillaris or canella; it is distinguished 

 from the latter by the absence of humeral spot, and from the former, 

 in addition, by the less densely punctate thorax. 



Occurs in Georgia. 



C. seiieipeiinis Lee, .Tourn. Acad, iv, p. 26.— Surface distinctly aeneous : 

 head, thorax, scutellum and under side pubescent, elytra glabrous. Thorax 

 rather densely piuK^tate with a smooth median line. Elytra with coar.se punc- 

 tures arranged in quite regular strije, but confussed near the scutellum. Length 

 .26— .28 inch, : 6.5—7 mm. 



'J'his is the largest species in our fauna. It is evidently more 

 nearly related to the Mexican cribrai'a than any other, although 

 quite distinct from that. The regularity of the elytral punctuation 

 might cause some suspicion that the species should be referred to 

 Euryscopa. 



Occurs in Texas and Arizona, extending into Mexico. 



ErRYS< OPA Lac. 



The species of this genus are far less numerous inour fauna than 

 Coscinoptera. They are known only from the extreme southwestern 

 regions of our country. 



The few species known may br thus separated : 



Thorax closely and coarsely punctate, much more densely near the sides. 



Thorax as long, or longer than wide; humeral umbone black ; subhumeral lobe 



well developed Ije<'Oiilri. 



Thorax broader than long: humeral spot ijuadrate. the umbone red; subhu- 

 meral lobe feeble piiMillH. 



Thorax finely and sparsely iniiictate. on the <lisc nearly smooth. 



Form rather slender; thorax as long (or nearly so) as wide; punctures of 



elytral striie fine MiibliliM. 



Form robust: thorax much widi'r than long: imncturcs of elytral stria- coarse 

 and deep vittaitit. 



TR.VNS. AM. KNT. SOC. XIX. .J.VNl'.VUV, 1892. 



