AMERICAN COLEOPTERA. 297 



This species may be known from any in our fauna, except the next 

 two, by its elongate parallel form, and from these by the opaque sur- 

 face and form of thorax. 



Occurs from Alaska to British Columbia. 



E. truncatella Mann. — Elongate, parallel, piceo-testaceous or nearly 

 black, sparsely pubescent, moderately shining. Head sparsely punctate. 

 Antennae rufous, club darker, funicle as in movogama. Thorax one-third 

 wider than long, very little narrower in front, sides feebly arcuate and at 

 posterior third obliquely narrowed, hind angles subrectangular, apex feebly 

 emarginate, base truncate, margin narrowly explanate, more widely pos- 

 teriorly and very slightly reflexed, surface densely punctate. Elytra parallel, 

 slightly narrowed near the apex which is obtusely truncate, margin narrowly 

 reflexed, disc slightly depressed, surface less densely punctured than the 

 elytra. Body beneath moderately densely punctate. Femora sparsely punc- 

 tulate. Length .10 — .12 inch; 2.5—3 mm. 



The sexual characters are as in linearis. 



This species has a wide distribution and is found in Canada, 

 Colorado, California, Oregon, and northward to Alaska. It varies 

 in color and slightly in elongation, and resembles somewhat the 

 next species. 



E. planillata Erichs. — Elongate, rufo-piceous, moderately shining, 

 sparsely pubescent. Head sparsely punctulate. Antennee extending very 

 little beyond the middle of the thorax, rufous, club piceous, joint 3 moder- 

 ately elongate, 4 — 8 short. Thorax one-third wider than long, apex slightly 

 narrower than base and feebly emarginate, sides moderately arcuate, very 

 slightly narrowing at the base, margin moderately explanate but not reflexed, 

 hind angles rectangular, base truncate, surface moderately densely punctulate. 

 Elytra nearly one-half longer than wide, slightly narrowed toward the tip 

 which is rotundato-truncate, margin narrowly reflexed, surface punctured 

 like the thorax. Body beneath with moderately dense punctures coarser 

 than those of the upper surface. Femora sparsely punctulate. Length .10 — 

 .12 inch; 2.5 — 3 mm. 



The sexual characters are as in truncatella. 



This species resembles truncatella but the sides of the thorax are 

 not obliquely narrowed posteriorly. The antennas are also shorter 

 and differently formed. 



All the specimens before me are from Alaska. 



Group II. 

 In this group, which contains but few species, the tibiae present 

 no sexual characters whatever. Here also we have species with 

 the posterior coxae widely separated, and one {peltoides), in which 

 the posterior femur of the male is very obtusely subangulate near 

 the tip. 



TRANS. AMEIi. ENT. SCO. VII. (38) AUGUST, 1879. 



