THE CLICK BEETLES. 



731 



hh. Base of elytra and sides for one-fourth the length red. 



LiESUS. 



gg. Elytra pale dull yellow. 



i. Narrow sutural margin and tip black. 1382. linteus. 



ii. Broad sutural stripe and narrow lateral margin black. 



1383. sayi. 



ee. Antennae with third joint not triangular or very feebly so in male. 

 j. Third joint of antennae very nearly equal to fourth and much 

 longer than second. 

 1c. Pubescence of thorax rather long and coarse; legs reddish- 

 brown. IMPOLITUS. 

 kJc. Pubescence of thorax very short. 



I. Thorax red. 1384. rubricollis. 



II. Body uniformly dark brown, nearly black ; length 11-16 mm. 



1384a. var. socer. 



jj. Third joint of antennae very little longer than second and dis- 

 tinctly shorter than fourth. 

 m. Black, legs and antennae alone reddish-brown; thorax finely 

 and sparsely punctate; joints 2 and 3 of antennae together 

 scarcely longer than fourth. 1385. subtilis. 



mm. Black ; thorax or elytra in part or wholly red or brownish-red. 

 n. Size larger, more robust ; length 6.5 or more mm. 

 o. Thorax wholly or partly red. 

 p. Apex of thorax black, base and sides red. 



1386. RUBRICUS. 



pp. Thorax wholly red. 1387. collaris. 



oo. Thorax black, elytra scarlet or dull red. 



1388. SANGUINIPENNIS. 



nn. Size smaller, slender ; length less than 5 mm. 



q. Elytra blackish with large oblique basal spot and some- 

 times the tip dull yellow ; thorax often yellow. 



1389. AREOLATUS. 



qq. Elytra dull brownish, the thorax paler. 1390. pusio. 



1378 (4200). Elater hepaticus Melsh., Proc. Phil. Acad. Nat. Sci., II, 

 1844, 160. 



Elongate-oblong, subconvex. Uniform dark brown, sparsely clothed 

 with coarse yellowish pubescence. Antennae with second and third joints 

 together a little longer than fourth. Thorax wider than long, sides rounded ; 

 hind angles acute, straight, finely bicarinate. Elytra with punctured striae ; 

 intervals flat, wrinkled, sparsely and finely pimctulate. Length 9-10 mm. 



Lake, Kosciusko, Marion and Posey counties ; scarce. April 11- 

 June 22. Occurs beneath bark and on vegetation. Resembles a 

 small form of the common Melanoius communis Gyll., but readily 

 known by the form of the hind coxal plates. 



E. insignis Lee, antennae and legs dull red, length 14 mm., is 

 recorded from Ohio and Texas. 



