422 Memoirs on the Coleoptera 



wide as the base, the basal lobe narrower; punctures coarse and 

 dense, the smooth median line distinct, narrow, even and almost 

 entire, being slightly abbreviated at apex; elytra still shorter, 

 barely a fifth longer than wide, obtusely parabolic, at the humeral 

 swellings distinctly wider than the prothorax, three-fourths longer; 

 striae, intervals and sculpture nearly as in the preceding; met- 

 episterna a little shorter and narrower, their inner margin somewhat 

 more strongly sinuous. Length (9) 4-0 mm.; width 2.0 mm. 

 Texas (Luling), — Wickham lulingensis n. sp. 



9 — Prothorax more or less inflated, especially in the female, and widest 

 before the base lo 



Prothorax widest at the base, not inflated laterally 20 



10 — Pronotal punctures more or less coarse and isolated, circular; larger 

 species, excepting convergens 1 1 



Pronotal punctures not so coarse and denser as a rule, often crowded. . 13 



1 1 — Prothorax nearly as long as wide, the basal lobe very feeble. Elon- 

 gate-oval, convex, rather shining, deep black throughout; squamules 

 of the upper surface small, slender, sparse and inconspicuous though 

 whitish, the under surface with large dense white scales; beak in the 

 male longer than the head and prothorax, feebly arcuate, gradually 

 more so basally, sulcate and coarsely punctate; antennae inserted 

 at four-sevenths, the funicle slender, with only its last joint wider, 

 the first elongate, the club with the tooth basal and rather small; 

 prothorax only a sixth wider than long, the sides evenly converging, 

 broadly and evenly arcuate from very near the base, the apex 

 sinuate medially and much less than half as wide as the base; 

 punctures rather coarse, deep, separated by a third to half their 

 diameters, with dense and longitudinally rugiiliform sculpture at 

 the sides; elytra with oblique and feebly arcuate sides and obtusely 

 rounded apex, three-sevenths longer than wide, at the prominent 

 humeri distinctly wider than the prothorax, only two-thirds longer, 

 the grooves coarse, abrupt and very deep; intervals from one-half 

 wider than, to twice as wide as, the grooves, rather coarsely, con- 

 fusedly punctato-rugose. Length (cf) 5.7 mm.; width 2.6 mm. 

 Kansas (Douglas Co.), — Snow snowi n. sp. 



Prothorax much shorter than wide, more inflated and with well developed 

 basal lobe I2 



12 — Body (9) broadly oblong-suboval, convex, rather shining, deep 

 black; squamules of the upper surface minute, very sparse and 

 wholly inconspicuous, beneath large, whitish and dense as usual; 

 beak in the female smooth, subcylindric, sensibly arcuate, more so 

 basally and nearly half as long as the body; antennae inserted barely 

 beyond the middle, the funicle very slender; prothorax large, nearly 

 one-half wider than long, widest barely behind the middle, the sides 

 strongly, subevenly arcuate, gradually strongly converging from 

 slightly before the middle; apex sinuate at the middle, barely three- 

 sevenths as wide as the base; surface with unusually arcuate profile 

 above, rapidly sloping anteriorly; punctures coarse, deep, separated 

 by half their diameters or more, with a smooth median line centrally 

 and at apex; elytra obtusely parabolic, at the swollen humeri but 



