342 GEO. H. HORN, M. D. 



cies. Exterior to the outer eosta there are three series of punctures, 

 two coarser which belong to the interval proper and a finer row on 

 the epipleuron. 



Occurs in southwestern Texas, locality unknown. 



A. fiiill>riatus Cas.* — Brown, elytra paler; antenuse .apparently stouter 

 than normal, clothed with rather long, scale-like hairs; head oval, longer than 

 wide, sides arcnately narrowing from the hase of the antennee, rather abruptly 

 constricted at the neck, sparsely clothed with yellowish scales; thorax but little 

 longer than wide, sides arcuate, near the base sinuate, disc sulcate at middle, the 

 groove limited each side by a row of erect scale-like hairs, margin of thorax 

 similarly fimbriate; elytra elongate-oval, equally narrowed at apex and base, 

 humeri obliquely rounded, disc quadricostate, the costie at summit with erect, 

 scale-like hairs, curved at tip, intervals coarsely biseriately punctate; propltune 

 nigulose, coarsely and closely punctate; legs sparsely scaly, femora mutic. 

 Length 4 mm. ; .16 inch. 



This species resembles sulcicollis, but the thoracic groove is much 

 better marked and limited. The sides of the head are arcuate and 

 not straight and oblique. The scale-like hairs are here much more 

 conspicuous than in any other species known to me, especially 

 as the margin of the thorax, the summits of the costfe and on the 

 antennae. 



Collected by Mr. H. F. Wickham, near Tucson, Arizona. 



A. costipeiiiiis Lee, Araer. Lye. v, p. 138. 



In this species the sides of the thorax are very feebly arcuate, 

 obliquelv narrowed from the anterior third to base, the disc convex, 

 with a slight impression at middle of the base. The elytra are nar- 

 rowly oval, equally narrow at either extremity, the humeri very ob- 

 liquely rounded, the disc has the usual four costse, the double row of 

 punctures between them, these separated by a less elevated ridge, the 

 costal and ridges at their summits have short, erect, bristle-like hairs 

 not closely placed. Propleurse rather sparsely punctate and shining. 

 Length 3-4 mm.; .12-.16 inch. 



The resemblance between this species and simplex have already 

 been alluded to. 



Occurs at Vallecito, Cal. (LeConte), Fort Grant, Tucson, Ariz. 

 (Wickham), and Fort Cummings, N. Mex. The last named speci- 

 men has the hairs of the costse more scale-like and less erect, and 

 may be a distinct species. 



A. decipiens n. sp. — Brown, opaque; head, thorax and legs sparsely 

 clothed with short yellowish scales ; head broadly oval, scarcely longer than 

 wide, sides arcuate, the hind angles broadly rounded ; thorax a little longer than 



* See foot-note on page 341. 



