NORTH AMERICAN COLEOPTERA. 63 



This species has ahiiost exactly the form of ohlonr/us, and is much 

 more closely related to it than ovipennw, with which Dr. LcConte 

 compares it. Probably by a lapsus calami the mesosternuiii was de- 

 scribed as not carinate. 



California, jNIarijwsa region. 



A. OTipeiinis Horn. — Oblong, convex, reddish brown or piceous, shining. 

 Antenna? and palpi reddish brown. Head moderately convex, without trace of 

 tubercles, moderately closely finely punctured, a few coarser punctures above 

 the eyes. Clyjieus broadly emarginate in front, the angles rounded, sides arcu- 

 ate, slightly sinuate, gena; prominent, subacute. Thorax nearly twice as wide as 

 long, distinctly nan-owed posteriorly, sides arcuate, hind angles almost obliter- 

 ated, base very feebly arcuate, but very oblique at the sides, tin' basal marginal 

 line deep ; disc moderatelj^ convex with very coarse and deep punctures sparsely 

 placed at middle, closer toward the sides and dense in the front angles, with 

 extremely fine punctures in the intervals. Elytra oval, narrower at base than 

 the thorax, humeri dentiform, the strife fine, but moderately deep, finely not 

 closely punctured, the intervals nearly flat on the disc and extremely finely 

 sparsely punctulate, more convex near the apex. Mesosternum coarsely closely 

 punctate, a narrow smooth space at middle, not carinate between the coxae. 

 Metasternum sparsely punctate at the sides. Abdomen very finely sparsely 

 punctulate, at sides wrinkled. Anterior tibiae smooth iu front, tridentate exter- 

 nally, not creuate above, the first tarsal joint shorter than the second. Posterior 

 femora sparsely punctate, the first tarsal joint longer than tlie next three. 

 Length .30-.34 inch ; 1.5-8.5 mm. 



The two specimens at present before me are probably males. The 

 spur of the anterior tibia is short, stout and curved inwards. 



This species recalls the nevadensis group in its general form, al- 

 though the elytra are still more oval and the humeri more dentiform. 

 The unequal spinules of the hind tibiae of the present species will 

 easily separate it from any of that series. 



Heretofore this species has been placed as a synonym of cadaver- 

 inus Mann., but with the insufhciency of the description of the latter 

 I can see no reason for adopting this view. There are at least two 

 species in group G., gentiUs and cribratus, either of which might he 

 the synonym, and which occur in the maritime regions of California, 

 while ovipennis is only known from the distant interior, from which 

 INIannerheim could hardly have obtained specimens at that time. 



Occurs at Fort Tejon, California. 



A. hiiineralis Lee— Oblong, robust, convex, black, sliining. Head mod- 

 erately convex, without trace of frontal tubercles, finely alutaceous, not punctu- 

 late. Clypeus broadly feebly emarginate, angles broadly rounded, sides oblique, 

 genie prominent, subacute. Thorax very convex, transverse, narrower behind, 

 sides feebly arcuate, hind angles almost obliterated, base feebly arcuate witli 

 deep marginal lino, the sides near the liind angles obliquely sinuate ; disc con- 



