694 Goleopierological Notices, VI. 



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

 and rather sparse ; post-scutellar impression broad and distinct, the omoplateft 

 very feeble. Ahdnmen polished, finely, somewhat closely punctate, the pubes- 

 cence short and abundant. Legs long, very slender. Length 3.0 mm. ; width 

 1.0 mm. 



California (San Mateo, near San Francisco). 



This species is closely 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 evidently a development of the 

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

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

 crihi'atus. 



5. A. ephippiuiii Laf.— Mon., p. 163; diffifilh Lee: Agass. "Lake Su- 

 perior," p. 230; Proc. Acad. Nat. Sci., Phila., 1852, p. 99; co»/usms Lee. : 1. c, 

 p. 99. 



The general description of LaFerte, more especially the phrase 

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

 — leave scarcely a doubt that the true ephi2)pium of that author 

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

 subsequently under the name confusus is identical in ever}^ 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 Californian 

 pinguescens, but they may be readily distinguished from that 

 species by the sparser punctuation and rounded temporal angles. 



The corneous copulatory sheath is elongate, parallel-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 efferent duct beneath is large and subcylindrical. 



6. A. siiniolus 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 ; antennae and legs 

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

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



