454 Memoirs on the Coleoptera 



single line of squamules and moderate, uniseriate and well spaced 

 punctures; under surface of the hind body densely albido-squamose, 

 the male abdomen feebly impressed medio-basally, the impression 

 scarcely less squamulose than the other basal parts of the surface. 

 Length (cf) 2.2 mm.; width 0.7 mm. District of Columbia. 



pertenuis n. sp. 



Body larger and stouter, the prothorax constricted and briefly subtubu- 

 _ late at apex 22 



22 — Form oblong-suboval, convex, with rather prominent humeri, deep 

 black throughout, the legs black; pronotum abruptly though loosely 

 clothed with yellowish-white squamules in fully lateral fourth, also 

 sharply but narrowly along the median line; strial intervals each 

 with a single regular line of whiter squamules, somewhat irregular 

 on the third; hind body beneath with close white scales; beak 

 missing in the only specimen at hand; prothorax with the sides just 

 visibly converging and barely at all arcuate, abruptly rounding in 

 about apical fourth; elytra four-sevenths longer than wide, at the 

 notably though obtusely swollen humeri distinctly wider than the 

 prothorax, four-fifths longer; sides very feebly converging and 

 nearly straight, gradually rounding behind the middle, the apex 

 narrowly obtuse; intervals not quite twice as wide as the grooves, 

 each with a series of moderate though very distinct, well spaced 

 punctures, somewhat confused on the third; male abdomen with a 

 deep and subglabrous elongate medio-basal impression. Length (cf ) 

 3.25 mm.; width 1.3 mm. Texas. [C. lineicollis Lee. nee Boh.]. 



lecontei Chmp. 



Form elongate, narrower, more evenly oval and rather more convex than 

 the preceding, similar in coloration and vestiture, except that the 

 loose lateral pronotal vitta of slender squamules is narrower, only a 

 fifth or sixth the total width, the median line not distinctly albido- 

 squamulose except basally, and the white squamules of the strial 

 intervals are in double series on the greater part of intervals 2-4-6, 

 and also on some others basally, the white scales almost similarly 

 dense beneath; beak in the male feebly arcuate, sculptured, fully 

 as long as the head and prothorax and only moderately thick, the 

 antennae inserted very near the middle, much less apical than usUal 

 in that sex; prothorax with the sides sensibly converging and 

 virtually straight to anterior fourth, there rapidly rounded to the 

 apical constriction, the distinctly tubulate apex half as wide as the 

 base; elytra more than one-half longer than wide, the sides evidently 

 converging and very evenly arcuate from the moderate humeral 

 swellings to the circularly rounded tip, slightly wider than the pro- 

 thorax and not quite twice as long; intervals fully twice as wide as 

 the striae, with small and not very distant, generally confused 

 punctures; male sexual characters as in the preceding. Length 

 (cf) 3-15 mm.; width 1.2 mm. Kentucky subtubulatus n. sp. 



23 — Prothorax as long as wide and more cylindric. Body subcylindric, 

 convex, black, with the legs feebly picescent; pale squamules above 

 sparsely aggregated in lateral sixth of the pronotum and on the 

 median line basally, more conspicuously white in single interstrial 



