AMERICAN COLEOPTERA. 281 



It is curious that in this our larp;est species the sexual characters 

 of the male should be so feeble, all the other species having well 

 marked teeth or dilatations of the posterior femora. The elytral 

 sculpture is also less marked in the male, the punctures of the striae 

 being always coarser in the female. 



Twelve specimens examined from Vancouver and Washington 

 Territory. 



A(j ath id iuni pallid am Say, may be this species. 



H. strigilatiis n. sp. — Oblong, pale castaneous, shining. Head very 

 sparsely punctulate, labrum scarcely einarginate. Thorax nearly twice as wide 

 as long, narrowed in front, widest in front of base, apex feebly emarginate, 

 base arcuate, sides arcuate, hind angles distinct but obtuse, surface finely and 

 sparsely punctulate and very minutely strigose. basal marginal line fine, nearly 

 obliterated at middle. Elytra not wider than the thorax, sides moderately 

 arcuate and gradually narrowed from the base, surface with striae of extremely 

 fine punctures, the intervals flat and finely obliquely strigose, the alternata 

 intervals very distantly finely punctulate. Body beneath very sparsely punctu- 

 late. Length .08— .10 inch ; 2—2.5 mm. 



Male. — Anterior and middle tarsi slightly dilated, anterior femur with a slender 

 spine at the middle beneath. Posterior femur simple. (PI. VI, fig. 18). 



Female. — Tarsi slender. Femora all simple. 



By its feebly emarginate labrum, strigose elytra and simple hind 

 femora in both sexes, this species is evidently allied to Matthewsii, 

 although widely differing in size and other sexual characters. 

 Three specimens, two % , one $ , Nevada and Vancouver. 



H. longultis Lee. — Form oblong, castaneous, shining. Head sparsely 

 punctate, labrum bilobed. Thorax twice as wide as long, widest at middle, 

 base and apex equal, sides moderately arcuate, apex feebly emarginate, base 

 broadly arcuate, hind angles rounded, disc rather coarsely but not densely 

 punctured, a finely impressed basal line. Elytra a little wider than the thorax, 

 oblong-oval, sutural stria moderately impressed behind the middle and con- 

 tinued to base by punctures, surface coarsely punctate, the punctures moder- 

 ately dense and with a faint tendency to a strial arrangement. Body beneath 

 sparsely punctate. Length .14 inch; 3.5 mm. 



Male. — Anterior and middle tarsi moderately dilated, the posterior femur 

 with a long tooth on the outer side near the knee obliquely truncate at tip. 

 (PI. VI, fig. 20). 



Female. — Tarsi slender, posterior femur more slender than the male and 

 without tooth. 



This species has a more coarsely punctured thorax than any other 

 in our fauna, and the sculpture of elytra in addition will serve to 

 distinguish it. The male will be easily separated. With this I unite 

 longidens Lee, as I am unable to find any difference. 



Occurs in Colorado, California, British Columbia and Oregon, four 

 specimens examined. 



TRANS. AMER. ENT. SOC. VIII. (36) SEPTEMBER, 1880. 



