oOS THE CANADIAN ENTOMOLOGIST. 



stria ending at the middle ; as indistinctly punctulate below as above. 

 Length, .05 to .08 inch. Described from 4 examples. 



The pubescence is excessively fine, pruinose in appearance and lightly 

 attached; when removed the surface seems highly polished, but with a 

 good glass is seen to be densely punctulate. The smooth species of 

 Hemiptychus, while readily separable by the eye, are not easily made 

 known by description. 



This species is next to nigritulus, the most common near Allegheny 

 and Pittsburg. On vaccine* and other low bushes ; June, July ; not 

 abundant. 



Isomira 7-iiftcollis. — Piceous black, thorax, mouth parts, tibiae and 

 tarsi ferrugineous. Head densely finely punctulate, transversely impressed 

 between the antenna;, antennae brown, one-third longer than head and 

 thorax, in both sexes, third and fourth joints subequal, each not much 

 longer than one of the following ; thorax at extreme apex as wide as long, 

 twice wider at base, very graduately narrowed from base to near apex and 

 then suddenly incurved, margin exceedingly fine, base not or slightly 

 sinuate each side of middle, hind angles slightly acute, dorsal line often 

 scarcely evident, two or more vague discal impressions sometimes 

 present, punctulation exceedingly fine and dense, dull from a dense 

 microscopic pubescence ; elytra at base scarcely wider than the thorax, 

 slightly dilating to apical fourth, sutural stria not impressed before 

 middle, 2nd not evident beyond apical 3rd and no traces of the others ; 

 closely, moderately, coarsely, uniformly punctuate over the whole surface, 

 each puncture bearing a short inconspicuous hair, shining ; underside 

 punctulate like the upper, metasternum and side pieces more coarsely ; 

 length. .17-. 2 1 inch. Described from eight examples. 



Not rare on bushes near wet places. The elytra at full maturity are 

 shining black, more or less brownish when immature. In some examples 

 there is an undefined dark spot on the disk of the thorax. In this species, 

 as well as in many other Cistelides, the antennae differ much in length 

 among individuals of either sex, also in the length of the joints ; and the 

 same is true in regard to the distance between the eyes ; therefore, these 

 characters are of little value for the separation of the species. 



Acalles curtus. — Inflated., without erect setae, unicoloured, cinereous. 

 Head and beak, except at tip, finely granulato-punctate, punctures con- 

 cealed by indument ; thorax equally wide at apex and base where the 

 width and length are subequal, one-fourth wider at middle, sides arcuately 



