136 [November, 1844. 



4. A. copronymus. Yellowish-rufous, minutely punctured , clypeus mutic, 

 emarginate at tip. — 2 1. long. Pennsylvania. 



Scaraboeus copronymus, Melsh. Catal. 



Oblong, convex, yellowish-red, shining: clypeus very minutely punctured, 

 with the apex widely emarginate, behind the emargination with a small obsolete 

 tubercle ; frontal suture distinct : thorax very minutely and sparingly punctured, 

 with the disk and margins almost impunctured ; base obtusely rounded : scutel 

 small, dusky, impunctured : elytra minutely punctate-striate, the interstices flat- 

 tish, impunctured ; suture somewhat dusky : feet and beneath paler than above. 



5. A. stercorosus. Head and thorax dark reddish-brown ; elytra pale rufous, 

 clouded with dusky, clypeus slightly emarginate. — 2 1. long. Pennsylvania. 



Scarabceus stercorosus, Melsh. Catal. 



Form and size of copronymus. Clypeus large, almost semi-circular, finely 

 and somewhat densely and equally punctured, dark reddish-brown, with the 

 margin rufo-piceous and slightly emarginate at tip ; mutic: palpi and antenna? 

 rufo-piceous : thorax minutely and not crowdedly punctured, with the middle 

 almost impunctured ; dark reddish-brown, with clearer places on the lateral mar- 

 gins: scutel moderate, piceous, impunctured : elytra pale rufous, clouded with 

 dusky, striate, with the striae obsoletely crenale or punctured, the interstices flat- 

 tish and impunctured : beneath and feet rufo-piceous. 



6. A. rusicola. Dark reddish-brown, punctuate ; clypeus tri-tuberculate, 

 slightly emarginate at apex. — 2\ 1. long. Pennsylvania. 



Scarabceus rusicola, Melsh. Catal. 



Short, wide, robust, convex, dark reddish-brown, shining : head very finely 

 punctured, with the clypeus confertly wrinkled and punctulate, tri-tuberculate 

 the margin rufous or piceous, with the edge angulate and widely and faintly 

 emarginate at apex : antennce and palpi rufous : thorax much and distinctly 

 punctulate : scutel black, sparsely punctured : elytra crenate-striate, the inter- 

 stices somewhat flattish, with few very minute scattered punctures : abdomen 

 yellowish : pectus dark, and feet light castaneous. 



7. A. aterrimus. — deep black ; thorax sparsely punctured ; clypeus tri-tuber- 

 culate, emarginate at apex. — 2| 1. long. Maryland. 



Deep black, shining : clypeus black-piceous, sparsely punctulate, rather 

 augulose at the margin ; disk with a fine transverse line or ridge, studded with 

 three obsolete tubercles ; margin depressed, with the edge slightly emarginate at 

 tip: thorax ample, with the angles obtuse; punctured, somewhat grossly and 

 deeply, sparsely at the sides, and still more distantly on the disk: scutel black, 

 sparsely punctured : elytra profoundly crenate-striate, interstices rather convex: 

 beneath black : feet pitchy-brown, with the tarsi rufous. Remarkable for the 

 few punctures on the thorax. 



8. A. imbricatus. Black, ferruginous granulate. — 2 1. long. Pennsylvania. 

 Oblong : clypeus mutic, emarginate at tip, somewhat convex in the middle, 



minutely and confertly punctured, black, with the margin rufous, or piceous: 

 thorax short, widely and somewhat profoundly emarginate before, with the 

 anterior angles broad and obtuse ; base obtusely rounded ; sides feebly rounded ; 

 posterior angles subrectilinear ; black, densely covered with ferruginous or 

 dirty sqamulse or rather granules : scutel small : elytra crenate-striate, the in- 

 terstices narrow and not convex ; less densely squamulose than the thorax, with 



