NORTH AMERICAN COLEOPTERA. 241 



Thi?? is one of the striking illustrations of the uncertainty resulting 

 from describing species from uni({ue examples. 

 Occurs in Oregon, C'alifornia and Nevada. 



27. li. iliversa n- sp. — Oblong oval, scarcely broader behind, rufocastaneous 

 to brown, moderately shining. Clypeus very feebly cmarginate, the border mod- 

 erately reflexed, surface shining, moderately closely punctate, front somewhat 

 more closely punctate. Thorax rather short and convex, sides nearly parallel 

 behind, arcuately narrowing to the front, the margin usually entire, with few 

 cilife, the surface with moderately coarse punctures not closely placed (as in 

 fnsca), the basal marginal groove distinct, but feebly impressed. Elytral punc- 

 tures as coarse as those of the thorax and more closely placed, distinctly rugu- 

 lose along the middle, the discal costse very feeble, the submarginal barely indi- 

 cated. Pygidinm sparsely vaguely punctate. Metasternum densely punctate, 

 the hair moderately long and dense, but shorter in the female. Abdomen sparsely 

 punctate, the last two .segments more coarsely. Claws curved, the tooth median, 

 not large % , larger in 9 • Last joint of maxillary palpi fusiform, not impressed. 

 Length .60— .72 inch; 15 — 18 mm. 



Male. — Antennul club nearly as long as the stem. Abdomen 

 rather broadly impressed, the penultimate segment (fig. 34) with a 

 semicircular, somewhat rugose depression, usually surrounded by a 

 finely raised line. Last segment broadly transversely impressed, a 

 faint longitudinal imj)res.sion, the apex faintly bisinuous. Inner 

 spur of hind tibia broad, short and obtuse, the outer longer and 

 more slender. 



Female. — Antennal club small and lenticular, shorter than the 

 funiculus. Pygidinm much more elongate than the male and more 

 convex at tip. Hind tarsi distinctly shorter. 



Variations. — While some specimens are comparatively smooth, 

 others are somewhat rugulose. The punctuation of the thorax varies 

 from that in which the punctures are separated by very little more 

 than their own diameter to that where the punctuation is as distant 

 as in the ordinary forms of fusca. The color variation is that com- 

 mon to all the fuscous species. 



The semicircular impre.^^.sion of the penultimate ventral of the male 

 extends from the posterior border slightly in front of the middle. 

 When the elevated line bordering it is well njarked the fossa seems 

 deeper. 



In facies this species resembles the smaller forms of fusca Jis well 

 as bipartita and the ventral characters of the male afford the only 

 certain means of separating thein. 



Occurs in Kentucky, Illinois, Kansas, Nebraska and Texas. 



TRANS. AMEK. ENT. SOC. XIV. (31) DECEMBEE, 1887. 



