694 Coleoplerological Notices, VI. 



the apex which is not broadly rounded ; base broadly truncate; punctures coarse 

 and rather sparse; post-scutcllar impression broad and distinct, the omoplatoK 

 very feeble. Ahdnmcu polished, liuely, somewhat closely punctate, the pubes- 

 cence short and abundant. L('g>< long, very slender. Length :5.0 mm. ; wadth 

 1.0 mm. 



California (San Mateo, near San Francisco). 



This species is closel}' allied to crihratus, differing in its less 

 sparse, shorter, less erect and bristling pubescence, more narrowly 

 rounded and prominent humeri which are more transverse at base^ 

 and in coloration. The latter is evidentl}" a development of the 

 pattern seen in cribratus, but is ver^^ constant in the four speci- 

 mens before me, and is equally constant in my four specimens of 

 cribratus. 



5. A, epliippiuiii I.af. — Mon., p. 163; dijficili.t Lee.: Agass. "LakeSu- 

 perior, " p. 230; Proc. Acad. Nat. Sci., Phila., 1852, p. 99; confnsuf< Lee.: 1. c, 

 p. 99. 



The general description of LaFertc', more especially the phrase 

 "tetedistinctement ponctuee," and the dimensions — 3.0 by 1.0 mm. 

 — leave scarcely a doul)t that the true ephippium of that author 

 is the species named difficilis hy LeConte; and the form described 

 subsequentl}- under the name confasus is identical in every way. 

 the two large series in the LeConte cabinet agreeing completely, 

 even to the specimens which bear the type-labels. 



This species occurs throughout North America east of the 

 Rocky Mountains, from New York to Texas (El Paso). Some 

 specimens from Wyoming are feebly marked like the Californiau 

 pinguescens, but they may be readily distinguished from that 

 species by the sparser punctuation and rounded temporal angles. 



The corneous copulatory sheath is elongate, ])arallel-sided, 

 transversely and strongly convex toward base, flattened toward 

 apex, where it is rather abruptly narrowed in the form of a perfect 

 ogive, the apex of the ogive produced slightly in a small promi- 

 nent point; the lateral edges of the flattened portion toward apex 

 are broadly reflexed. In profile the organ is straight ; the mem- 

 branous eflferent duct beneath is large and subcylindrical. 



6. A. siiuiolllS n. sp. — Polished, dark rufo-testaceous, the under sur- 

 face of the hind body, and a large median cloud on each elytron which is a 

 little more longitudinally developed at the sides, black; anteunai and legs 

 ochreous-yellow ; pubescence rather long, coarse, semi-erect, sparse but cine- 

 reous and conspicuous. Head subquadrate, a little wider than long, broadly 



