THE LAMELL1CORN BEETLES. 



1743 (5486). AT.ENIUS I.MBRICATUS Melsh., Proc. Phil. Acad. Nat. Sci., II, 



1844, 136. 



Oblong-oval, moderately .convex. Piceous, opaque, the surface usually 

 covered with a brownish-gray coating ; legs brownish, anteume and palpi 

 paler. Clypeus broadly but feebly emarginate, its sides broadly curved, 

 nearly smooth at middle; vertex densely punctate. Thorax nearly twice 

 as wide as long, slightly narrower behind; sides in front curved, hind angles 

 very obtuse, base broadly curved ; surface with rather coarse and closely 

 placed punctures, which are but faintly visible on account of coating. Ely- 

 tra as wide at base as thorax, humeri acutely dentate; stria- rather deep, 

 with coarse, not closely placed indistinct punctures; intervals flat, each 

 with a single row of tine punctures bearing a small, scale-like yellowish 

 hair. Length 4-^.5 mm. 



Lake County; rare. May 2r>-.)nly 12. Two specimens only 

 from beneath rubbish; one from the lake beach near Pine; the other 

 from Hessville by Wolcott. Occurs from Massachusetts to Texas. 



1744 (5487). ATJENITS ALTERNATES Melsh., loc. cit., p. 137. 



Resembles hiihricittus in form and color. Head densely punctured, the 

 punctures equal, at sides more rugose. Thorax similar to that of imbri- 

 catus, the base undulate, not regularly curved. Elytra 1 striae fine, with 

 rather distant inconspicuous punctures, often hidden by the surface coat- 

 ing; intervals slightly convex, the alternate ones. 1-3-5-7. more acutely 

 elevated along the middle. Length 3.5-4.5 mm. 



Posey County; rare. June 5. Occurs from Pennsylvania to 

 Texas. 



A. oi'afiilu* Horn, piceous-black, legs and antenna 1 paler, length 

 3.5 mm., is known from Pennsylvania to Louisiana. 



1745 (5491). AT.ENIUS OTCACILIS Melsh., loc. cit., p. 137. 



Elongate, slender, parallel, subdepressed. Piceous black, moderately 

 shining ; legs brownish ; tarsi, palpi, antenna 3 and very narrow front mar- 

 gin of thorax, paler. Clypeus rather smooth in front; vertex rather closely 

 and coarsely punctate. Thorax one and a half times wjder than long, hind 

 angles broadly rounded, base curved, its marginal line very distinct; disk 

 with a distinct impression near front angles and a feebler one at middle 

 of sides, surface rather coarsely and closely punctate. Elytra as wide as 

 thorax, stria? deep and broad, not distinctly punctured; intervals strongly 

 convex, almost like carina 1 , each with a row of slight elongate elevations 

 on the sides below the summit. Mesosternum opaque, coarsely punctured, 

 strongly carinate between the coxre. Length 3-4 mm. 



Throughout the State; frequent. April 23-Octoher 10. A pret- 

 tily marked and very distinct, little species, widely distributed over 

 the United States. 



A. strigahis Say, piceous-black, leg's and antenna 1 paler, length 

 4.r>-f) mm., is said to occur from the Middle States westward and 

 southward. 



