AMERICAN COLEOPTERA. 297 



2. — Ninth stria distant from tlie margin in its entire length. 



Punctures of striae rather strong, of intervals fine, scarcely perceptible. 



basalis Lee. 

 Punctures of striae fine, those of the intervals quite evident. 



obsolcta n. sp. 



Ninth stria marginal, distant from the margin for a short distance at base 



only, punctures of discal striae much confused forming nearly double 



striae geminata n.sp. 



3. — Punctures of elytra much confused without distinct strial arrangement, the 



punctures rather coarse but unequal COuTusa n. sp. 



The last is the only species thus far known peculiar to the Pacific 

 region. A variety of globosa occurs with it but but with these ex- 

 ceptions the species are peculiar to the Atlantic rej^ion, our total bein"' 

 slightly in excess of the European list, the genus being thus far con- 

 fined to our own and that continent. 



li. globosa Lee. — Broadly oval, very little longer than wide, convex, 

 piceous-black, shining. Head and thorax punctulate. the latter much more 

 sparsely and finely. Hind angles of thorax rectangular, sometimes slightly 

 obtuse. Elytra oval, not longer than wide at base, the latter on each side 

 scarcely oblique, the humeri distinct, sides when viewed laterally sinuate 

 behind the middle, disc with eight entire striae of moderate punctures, the 

 ninth short, distant from the margin at base but becoming confused and 

 joining the margin in front of the middle, intervals sparsely punctulate, the 

 alternate with scarcely evident coarser punctures, distantly placed. Meta- 

 sternum coarsely punctate, abdomen more finely and sparsely. Length .12 — 

 .14 inch ; 3 — 3.5 mm. 



Male. — Anterior and middle tarsi very slightly dilated. Posterior femora 

 with a minute denticle at middle. 



Female. — Tarsi slender. Posterior femora simple. 



Var. globosa. — Color entirely piceous-black, sometimes with the legs and 

 under aide paler. 



Var. bicolor. — Piceous-black, head, thorax and scutellum orange-red, body 

 beneath and legs rufo-piceous. Occurs in Nevada. 



In this species the striae are not as regular as is usual in this 

 group although not at all approaching the irregularity of the others. 

 I do not see any good reason for separating the second variety as a 

 species, the color being the only diflerence. I have seen both sexes 

 of the two forms. 



Occurs in the northern part of the Atlantic region extending to 

 Nevada, and as far south as Kentucky. 



li. polita Lee. — Hemispherical, a little longer than wide, piceous-black, 

 shining. Head very minutely and sparsely punctulate. Thorax smooth, hind 

 angles rectangular. Elytra not longer than wide at base, humeri distinct, 

 surface with eight entire striae of moderate punctures, not closely placed, the 

 ninth distant from the margin at base but joining it at middle, intervals 

 smooth, the alternate with distant punctures, sides of elytra when viewed 



TPANS. AMER. ENT. SOC. VIII. (38) OCTOBER, 1880. 



