THE MONOTOMID BEETLES. 669 



1282 (3860). MONOTOMA PARALLELA Lee., Proc. Phil. Acacl. Nat. Sci., 1855, 



305. 



Elongate-oblong, subdepressed. Piceous, opaque ; ameume and legs red- 

 dish-brown. Head coarsely and densely punctured, not impressed on the 

 sides. Thorax nearly square, sides parallel, front angles not prominent, 

 hind angles rounded ; disk coarsely and densely punctured and with faint 

 basal impressions. Elytra with strife of rather fine punctures. Body be- 

 neath densely and rather coarsely punctured. Length 2 mm. 



Jackson County ; rare. September 9. 



1283 (3863). MONOTOMA LONGICOLLIS Gyll., Ins. Suec., 635. 



Elongate, subcylindrical. Dark reddish-brown, feebly shining; legs 

 and antenna? paler. Head coarsely, not densely punctate, its hind angles 

 ending in a tooth. Thorax slightly longer than wide, front angles distinct, 

 hind ones obtuse, sides almost straight; disk finely and rather sparsely 

 punctate and with two distinct fovese near base. Elytra with rows of fine 

 simple punctures; intervals alutaceous. Length 1.5-1.7 mm. 



Webster collection from "Indiana." Known from all others by 

 the finely punctured and shining thorax. 



Hesperolxenus rufpes Lee., piceous, antennas and legs reddish- 

 brown, length 3 mm., is known from Illinois and Missouri. 



Europs pallip< HIIIX Lee., piceous, elytra dull yellow, thorax as 

 wide as long with a curved basal impression, length 2.8 mm., is 

 known from Pennsylvania. 



II. BACTRIDIUM Lee. 1861. (Gr., "a stick + little.") 



Besides the distinctive characters given in the key, the mem- 

 bers of this genus have the intorcoxal process of abdomen rather 

 broad, truncate in front and the elytra with rows of punctures. 

 Four species are known from the United States, two of which have 

 been taken in Indiana, 



1284 (3869). BACTKIDIUM EPHIPPIGERUM Guer., Icon. Reg. Anim., 1830, 190. 

 Oblong, depressed. Piceous, shining ; antenna 3 , legs and elytra reddish- 

 brown, the sides and tips of the latter usually darker. Thorax slightly 

 wider than long, sides feebly curved and somewhat narrowed to the base, 

 margin with two small teeth behind the middle; surface vaguely concave, 

 sparsely punctured at middle, much more densely at sides. Elytra slightly 

 wider than thorax, finely striate, the strire at sides closely and finely placed, 

 those of disk with fine, rather closely placed punctures. Length 2 mm. 



Marshall, Starke, Jennings and Crawford counties; scarce. May 

 20-November 20. Taken by sifting the mold and leaves about the 

 roots of trees ; also beneath bark of honey locust, 



