AMERICAN COLEOPTERA. 127 



given in the tables. It differs moreover from stercorosna in having the 

 color of the elytra uniform which in the latter species is always clouded. 

 Occurs from the ^liddle States to Texas. 



A. stercorosus. Mels. Proc. Acad, ii, 1S44, p. 13(1. 



Similar in form and color to ruhcolus but less robust. Head more 

 densely punctured. Thorax finely punctured on the disc with coarse 

 punctures toward the sides. Elytra ferruginous with darker clouding, 

 not deeply striate, stri;x! more distinctly punctured than in the pre- 

 ceding species. IjCngth .14 — .10 inch; 3.5 — 4 mm. 



Xot rare in the Middle States and southward. 



A. militaris, Lee. Proc. Acad. 1858, p. 65.— Elongate, ferruginous, shining. 

 Head rather coarsely granulose, clypeus emarginate at middle and on each side 

 an acute prominent tooth. Thorax rather coarsely not densely punctured, 

 sides moderately rounded, base distinctly coarsely not densely punctured, sides 

 moderately rounded, base distinctly margined. Elytra parallel, faintly striate 

 striae finely punctured; interspaces flat, coarsely punctured. Mesosternum dis- 

 tinctly carinate. Length .20 — .24 inch; 5 — 6 mm. 



Notwithstanding the original description, the mesosternum will be 

 found to be distinctly carinate. When examined with very high 

 power the elytral interspaces may be seen to be very minutely and 

 densely punctulate. One specimen before me $ has the spur of the 

 anterior tibia slender and acute, two others % show no traces what- 

 ever of any .spur. The anterior tibiae are normal in their construc- 

 tion and not truncate as in Coj)fo(hirus. 



Three specimens San Diego, Cal. 



A. rubiginosus, n. sp. — Elongate, ferruginous, shining. Head densely not 

 coarsely punctured; clypeus emarginate at middle, angnlate on each side of 

 emargination. Thorax moderately convex, densely not coarsely punctured, 

 sides moderately rounded, base distinctly margined. Elytra moderately con- 

 vex, sides slightly rounded rather deeply striate, striae closely punctured, inter- 

 spaces feebly convex, densely punctulate. Body beneath rufous, mesosternum 

 flat. Length .22 inch; 5.5 mm. 



Male. — Spur of anterior tibia slender, strongly curved backwards, inner spur 

 of middle tibia slender and short. 



Closely resembling milifaris differing in the sexual characters, and 

 by the front being nearly angulate and not bidcntate, also by the flat 

 not carinate mesosternum. 



One specimen from Camp Grant, on San Pedro River, Arizona. 



A. aegrotus, n. sp. — Moderately elongate, shining, pale reddish, elytra paler 

 than the bead and thorax. Head smooth very faintly punctulate, clypeus 

 feebly emarginate at middle. Thorax moderately convex, very faintly punc- 

 tulate with a few coarser punctures on each side of middle, sides feebly 

 rounded and of paler color than the disc. Elytra oval, not obtuse at tip, moder- 



