THE CLICK BEETLES. 709 



M. subsimiaius Lee., piceous or nearly black, posterior supple- 

 mentary carina very long, length 3.5-5 mm., is recorded from Can- 

 ada, Ohio and Virginia; M. impressicottis Bonv., reddish-brown, 

 length 5.5-6.5 mm., is a southern species recorded by Dury from 

 near Cincinnati. 



1338 (4055). MICRORHAGUS TRIANGULARIS Say, Journ. Phil. Acad. Nat. Sci., 



Ill, 1823, 170; ibid. II, 110, 628. 



Elongate-oblong, slender, narrower behind the middle. Piceous or 

 black, feebly shining ; antenna? and legs brownish. Antennae feebly ser- 

 rate, one-half, female, or three-fourths, male, the length of body. Thorax 

 nearly as wide as long, sides straight and parallel, hind angles carinate, 

 disk rather coarsely and densely punctured. Posterior supplementary 

 carina reaching the middle of thorax. Elytra obsoletely striate, closely 

 and roughly punctate. Length 3-4 mm. 



Koscuisko, Marion arid Posey counties; scarce. May 1-July 11. 



1339 (4054). MICRORHAGUS PECTINATUS Lee., Proc. Phil. Acad. Nat. Sci., 



1866, 387. 



Elongate-oblong, slightly narrowed behind the middle. Piceous, mod- 

 erately shining; legs brownish, tibia 1 and tarsi paler. Antenna? two-thirds 

 the length of body and pectinate, male; one-half the length of body, acutely 

 serrate, female. Thorax wider than long, sides parallel, rounded in front, 

 hind angles finely carinate; surface rather coarsely but not densely punc- 

 tured. Antenna 1 grooves slightly wider behind, the outer carina entire, 

 extending to hind angles of thorax. Elytra as wide at base as thorax, 

 vaguely striate, densely and coarsely punctured. Length 4.5-5 mm. 



Marion and Crawford counties; scarce. April 20-May 1. Oc- 

 curs in partially rotten elm and other logs. 



Entomophthalmus rnfiolus Lee., pale reddish-brown, antennae 

 nearly as long as body, second and third joints very small, together 

 shorter than fourth, length 4 mm., is known from Ohio and Illinois. 



VIII. HYLOCHARES Latr. 1834. (Gr., "forest + rejoice.") 



Small robust species, having the antenna? short, not passing hind 

 angles of thorax, joints 4-10 equal, as broad as long ; clypeus nar- 

 rowed at base, trilobed in front; hind coxal plates parallel; first 

 joint of hind tarsi as long as the next two, lobed beneath. 



1340 (4067). HYLOCHARES NIGRICORNIS Say, Journ. Phil. Acad. Nat. Sci., 



Ill, 1823, 165; ibid. II, 107. 



Subcylindrical, robust. Black, feebly shining; apical and sometimes 

 basal margins of thorax reddish. Head and thorax coarsely, densely and 

 deeply punctured. Thorax broader than long, sides curved on apical half; 

 disk with a deep and broad median line and an oblique impression near 

 hind angles. Elytra deeply striate, strire coarsely punctured ; intervals 

 finely and rugosely punctate. Length 8-9 mm. 



