752 FAMILY XXXVII. ELATERTDJE. 



sparsely and finely punctulate. Prosternal flanks sparsely and finely punc- 

 tate. Length 10-11.5 mm. 



Yermillion, Vigo, Knox and Posey counties; scarce. June (>~ 

 July 24. 'Afore densely pubescent, than any other member of the 

 genus taken in the State. Occurs on vegetation, especially that of 

 milkweed. 



1420 ( -). MELANOTUS CARINUS sp. nov. 



Elongate, rather robust. Fuscous or dark reddish-brown, sparsely pu- 

 bescent with long gray hairs; antenna? and legs paler. Clypeus feebly con- 

 cave, coarsely punctate. Third joint of antennae much narrower than and 

 one-half the length of fourth. Thorax subquadrate, scarcely narrower at 

 apex than base, sides almost straight, the punctures very coarse, rather 

 dense at sides, sparse at middle ; disk with a vague median impression on 

 basal third. Elytral stria? feebly impressed, coarsely punctate; intervals 

 minutely and indistinctly punctate. Last ventral of male with coarse, 

 dense, elongate punctures. Length 12 mm. 



Lake County ; rare. June 4. 



1421 (4315). MELANOTUS TRAPEZOIDEUS Lee., Trans. Amer. Phil. Soc., X, 



1853, 475. 



Elongate, slender. Dark chestnut or sooty brown, sparsely pubescent 

 with long grayish hairs; antenna? and legs paler. Third joint of antenna? 

 twice the length of second, one-third shorter than fourth. Thorax slightly 

 longer than wide, sides nearly straight, feebly rounded on apical third, disk 

 very sparsely and rather coarsely punctate; carina? of hind angles long, 

 close to the margin. Elytra subparallel to apical third, thence gradually 

 narrowed to tips; punctures of stria? feebly impressed. Length 8-9 mm. 



Throughout the State; scarce. March 21-July 3. Probably 

 hibernates. Resembles f/r/j r.s-.s'M.y, but the thorax is shorter, and in 

 that species the third joint of antenna 3 is more nearly the length of 

 fourth. 



1422 ( -). MELANOTUS PRASINUS sp. uov. 



Elongate, slender, subcylindrical. Reddish-brown, shining, sparsely pu- 

 bescent. Clypeus snbcoucave, coarsely punctate. Third joint of antenna? 

 twice as long as second, one-third shorter than fourth. Thorax distinctly 

 convex, slightly longer than wide, sides straight to apical third, thence 

 feebly rounded to apex, disk everywhere very finely and remotely punctate. 

 Elytra strongly tapering from base to apex; stria? rather coarsely punctate; 

 intervals finely and sparsely punctate. Length 8.5-9 mm. 



Vermillion and Pnsey counties; rare. June 15-July 3. Re- 

 sembles <1< jirrxHtix, but readily distinguished by the shorter, nearly 

 truncate elypeus, narrower and more convex thorax and shorter 

 third joint of antenna'. 



1423 (4306). MELANOTUS MACEB Lee., Trans. Amer. Phil. Soc., X, 1853, 473. 

 Elongate, slender, parallel. Rather pale reddish-brown, sparsely clothed 



with grayish hairs. Clypeus concave, coarsely and densely punctate. An- 



