NORTH AMERICAN COLEOPTERA. 3" 



The pale color occupies one-fourth to one-third of the base of the 

 elytra, extending downward on the sides nearly to the middle. Varieties 

 occur with the elytra entirely pale or even entirely piceous, in which case 

 they resemble inanus. and may be distinguished by the thoracic punctua- 

 tion. 



Occurs in California ; those in my cabinet are from Owen's Valley. 



H. transriigus Lee. — Form moderately robust, piceous, sometimes nearly- 

 black, sparsely cinereo-pubescent, an oval humeral spot on the elytra, legs and an- 

 teunre rufq-testaceous. Antennae extending beyond the hind angles of the thorax, 

 feebly serrate. Head convex, moderately closely, finely punctate, with very few 

 coarser punctures intermixed. Thorax a very little longer than wide, sides mod- 

 erately arcuate, apex very little narrower than the base, hind angles slightly di- 

 vergent, the basal plicae small, but double, disc convex, moderately shining, finely 

 and closely punctate, the coarser punctures barely distinct, color piceous, the apical 

 and basal margins often reddish brown. Elytra not wider than the thorax, humeri 

 distinct, gradually arcuately narrowing to apex, finely striate, striae not deeply 

 punctate, intervals tJat, minutely and sparsely punctulate, humeral red spot oval 

 acute behind, sometimes extending in a vitta. Body beneath very finely punctu- 

 late, coarser punctures evident only on the sides of the pronotum. Claws bi-oadly 

 toothed from middle to base. Length .18-.26 inch; 4.5-fi.5 mm. 



This species could only be confounded with basalts, from which it dif- 

 fers by its well defined elytral humeri, and the oval spot on each separated 

 at the suture and not extending down on the sides. 



Occurs in California (Sacramento Valley and northward). 



H. <lefinitus Horn. —Form robust, ferruginous or pale brown, sub-opaque, 

 sparsely clothed with fine cinereous pubescence, somewhat holosericeous on the 

 thorax, legs and antennre paler. Antennae slender, extending beyond the hind 

 angles of the thorax. Head convex, densely punctulate with numerous coarse 

 punctures intermixed. Thorax a very little longer than wide, sides moderately 

 aicuate, apex scarcely narrower than base, hind angles not divergent, basal plicae 

 well marked, disc convex, fine punctuation scarcely evident, the coarse punctua- 

 tion large and closely placed at middle in front, becoming gradually finer toward 

 the base and sides. Elytra not wider than the thorax, oblong oval, humeri dis- 

 tinct, disc striate, striae moderately coarsely but not closely punctate, intervals 

 slightly convex, sparsely punctulate. Body beneath more closely pubescent than 

 above, fine punctuation close with very evident coarser punctures intermixed. 

 Claws rectangularly toothed from middle to base. Length .20-. 28 inch; 5-7 mm. 



Easily known among the species with the strongly arcuate sides of the 

 thorax, by its color, the character of the thoracic pubescence, and the 

 very evident coarse punctuation. 



Occurs in Owen's Valley, California. 



H. sufllatus Lee. — Form moderately robust, slightly depressed, piceous or 

 brownish, shining, sparsely cinerso-pubescent, legs and antennae testaceous. An- 

 tennae slender, extending slightly beyond the hind angles of the thorax. Head 



