128 GEO. ri. HORN, M. D. 



A. iilNiiIariK, n. sp. — Form oval, robust, piceo-seneous, shining. Head 

 emootli, frontal impressions feeble. Antennae not carinate at base, pale rufo- 

 testaceous. Thorax one-half broader than long, slightly narrowed in front, 

 convex, sides moderately arcuate from the basal angles; apex very feebly 

 emarginate, anterior angles broadly rounded, base not sinuous, hind angles 

 nearly rectangular, not obtuse; surface smooth, shining, basal impressions 

 nearly obsolete. Elytra rather broadly oval, finely striate, strise entire, im- 

 punctured, intervals flat. Body beneath and legs, piceo-rufous, smooth and 

 shining. Length .38 inch; 9.5 mm. 



Male. — Hind tibiae i)ubescent within, prosternum with deep puncture. 



The form and general appearance of this species is almost exactly 

 that of callfornlta althouyli somewhat larger. It must however be 

 referred to the pre.sent group and by the presence of the prosternal 

 puncture in the male its place is near inslgnis from which it differs by 

 its more oval form, different color and smooth thorax. 



Two specimens iu the cabinet of Dr. Leconte, from the island of 

 San Clemente on the coast of California. 



The following species are the North American representatives of the 

 sub-genus Bradi/tus Zimm. 



Prosternum with side pieces smooth. 



Prosternum % with oval punctured space. 

 • Meso- and metasternal side pieces punctured, scutellar stria verj' short or 



entirely v/anting exarala Dej. 



Meso- and metasternal side pieces smooth, scutellar stria very long. 



latior Kby. 

 Prosternum % not punctured but feebly longitudinally sulcata in both sexes. 

 Meso- and metasternal side pieces smooth, scutellar stria lone;. 



scptciitrionalis Lee. 



Prosternum with side pieces punctured, meso- and metasternal side pieces 



punctured, scutellar stria long Putzeysii n. sp. 



A. glacialis Men., formerly placed in this group, is said by Putzeys 

 to be a Curtonofus (Lirus). I have seen only females. 



A. cvarata I>ej.,furtiva Lee. 



I cannot detect any difference between these two species. The 

 original specimens of the latter were immature and differed somewhat 

 in the punctuation of tlic thorax from exurata. A larger series from 

 intermediate portions of the country indicate the want of value of the 

 characters which appeared to distinguish the two species at first. 



A. latior Kby., libera Lee, hyperborea % Lqc, Icevistriata Putz., oregona Lee. 

 Late collections from Colorado and New Mexico show the advisa- 

 bility of uniting oregona as a synonym. The type specimens of the 

 latter are smaller, darker in color and possibly somewhat more slender, 

 in all other respects the agreement is complete. 



