NORTH AMERICAN COLEOPTERA. 231 



j)unctate. very much more coarsely on the last two segments. Last joint of 

 maxillary palpi sleudei' fusiform, not impressed. Claws arcuate, a stronjr, acute, 

 median tooth iu both sexes. Lenjith .48 — .64 inch ; 12 — 17 mm. 



Male. — Antennal club a little .-shorter than the stem. Alxloiiien 

 broadly longitudinally impressed, ])enultinutte i^egment slightly con- 

 vex and regular at middle, on each side obliquely plicate, the last 

 ventral dee])ly concave, the concavity united in its posterior half by 

 an deviated border slightly united. Inner spur of posterior tibia 

 (fig. 14) somewhat sigmoid iu form, the proximal portion arcuate 

 with the concavity toward the tarsus, the ai>ical portion suddenly, 

 obliquely bent. 



Female. — Antennae short, the club small, lenticular, shorter than 

 the funiculus, outer funicular joints more or less transverse. Last 

 ventral segment with posterior border vaguely bisinuate. Spurs of 

 hind tibiae slender and moderate in length. Posterior tarsi one-third 

 shorter than the male. 



Variations. — The color variation has already been indicated. 

 In the fully developed specimens the elytral costse are but faintly 

 indicated or even entirely wanting, while in the smaller specimens 

 (which have at the same time a more robust facies) the costae are well 

 developed and the surface of the elytra more coarsely punctured and 

 rugulose. 



In his description of this species Burmeister adds a foot note, 

 which I here translate : " One of the two specimens before me shows 

 a remarkably anomaly ; the ventral segments, usually completely 

 united, are distinct, convex in their middle and resemble barrel- 

 hoops in appearance." A similar specimen is now before me, and 

 this discovery caused me to compare the species with Burmeister's 

 'description. 



This species has long been known in our collections nsj'ufilk Lee, 

 to which must be added serricornis Lee, described from a female. 



Occurs from Canada southward to Vii'ginia and from the New 

 England States to Kansas. 



18. Ij. llirtiveiltris n. sp. — Ohlons. sli.yhtly oval, pale ca.stancous, moder- 

 ately shining. Clypeus feebly emarginate, margin narrowly reflexed, surface 

 moderately closely punctate, front more densely and rugosely punctate. Thorax 

 arcuately narrowed from base to apex, the margin somewliat irregular, but not 

 distinctly crenate, the fimbrite short, the punctures coarse and close, rather dense 

 near the apical margin, an indistinct smooth median space, a distinct channel 

 along the basal margin from the angles nearly to the middle. Elytral punctures 

 coarser and closer than on the tliorax, luit less deep, the surface slightly wrin- 



