74(5 



FAMILY XXXVII. ELATERIDJE. 



equal, together a little shorter than fourth. Thorax subquaclrate, convex, 

 rather sparsely punctate at middle, very coarsely and closely on sides and 

 with a faint median impressed line near base; hind angles strongly and 

 acutely carinate. Elytral striae with crenate punctures ; intervals flat, finely 

 and sparsely punctulate. Length 17.5-18 mm. 



Orange and Crawford counties; rare. June 1-June 26. This 

 species may prove to be the female of corticimis. The single type 

 at Cambridge is a female, as are also both of my specimens. 



1408 (4320) . Melanotus castanipes Payk., Faun. Suec. Insect., Ill, 1S00, 23. 

 Elongate, the sides parallel. Very dark reddish-brown, sparsely pubes- 

 cent. Second and third joints of antennae subequal, together slightly shorter 

 than fourth. Thorax a little longer than wide, distinctly narrower at apex 

 than base, sides feebly but distinctly rounded from base of hind angles to 

 apex ; disk coarsely and densely punctured, the median impressed line dis- 

 tinct on basal third; hind angles elongate, acute, divergent, strongly and 

 obliquely carinate. Elytra with sides straight and parallel from base nearly 

 to apex ; stria? feebly impressed with elongate punctures. Length 18-21 mm. 



Laporte County ; rare. May 20. Taken from beneath the bark 

 of pine, and probably occurs only in the northern counties. 



1409 (4312). Melanotus ignobilis Melsh., Proc. Phil. Acad. Nat. Sci., II, 



1844, 152. 



Elongate, slender. Piceous or very dark reddish-brown, sparsely pu- 

 bescent. Antennae elongate, joints broader and more strongly serrate than 

 usual, the third one-fourth longer than second. Thorax subquaclrate, slightly 

 longer than wide, a little narrowed in front, sides straight; carina? of hind 

 angles continued onto elytral humeri. Elytra feebly but distinctly narrowed 

 from base to apex, marked with rows of large, round, deep punctures ; in- 

 tervals minutely and sparsely punctate. Length 10.5 mm. 



Fountain County- rare. June 16. Described from Pennsyl- 

 vania. The long parallel carina? of hind angles, carinate humeri 

 of elytra and broad antenna] joints make this an easily distinguished 

 species. 



-[410 ( ). Melanotus longicornis sp. nov. 



Elongate, slender. Chestnut or reddish-brown, sparsely clothed with 

 prostrate grayish hairs. Antenna? of male reaching middle of elytra, of 

 female one-fourth shorter ; joints 2 and 3 subglobular, the third one-fourth 

 longer than second, together much shorter than fourth. Clypeus concave, 

 coarsely and densely punctate, its front margin feebly angulate at middle. 

 Thorax one-fourth longer than wide, sides straight and diverging from apex 

 to base; disk very sparsely and rather finely punctate at middle, more 

 coarsely and closely on sides. Elytra with rows of coarse, close-set punc- 

 tures ; intervals smooth or nearly so. Abdomen coarsely and rather densely 

 punctate. Length 9.5-10 mm. 



