THE CLICK BEETLES. 



727 



Described from New Harmony, Posey County. One dead speci- 

 men taken near there by Wolcott; also taken by Dury near Cin- 

 cinnati. Should occur sparingly throughout the southern third of 

 State. 



XXIII. MONOCREPIDIUS Esch. 1829. (Gr., "single + little shoe.") 



Fourth joint of tarsi obliquely prolonged into a membranous 

 lobe; first joint of antennas longer than usual; hind coxal plates 

 suddenly dilated on the inner side with the angles rounded and a 

 tooth at the origin of the thighs. 



KEY TO INDIANA SPECIES OF MONOCREPIDIUS. 



a. Lobe of fourth tarsal joint very broad. 



?>. Size larger, 12 or more mm. ; color uniform brown. 1371. LIVIDUS. 

 b&. Smaller, not over 7.5 mm. ; elytra dull reddish-brown witb a broad 

 fuscous stripe aloug the suture. 1372. SUTURAI.IS. 



an. Lobe of fourth tarsal joint narrow. 

 c. Length 5 or more mm. 

 d. Form elongate, slender; thorax distinctly longer than wide. 



1373. VESPERT1NUS. 



dd. Form short, oblong, robust ; thorax about as wide as long. 



1374. AURITUS. 

 cc. Length not over 4 mm. ; elytra reddish with narrow black lines. 



1375. BELLUS. 



1371 (4181). MONOCREPIDIUS LIVIDUS DeGeer, Mem. 

 Hist, des Ins., IV, 1763, 162. 



Elongate, subconvex. Dull brown, densely covered 

 with short, prostrate hair ; an tenure reddish brown ; 

 legs yellow. Thorax one-fourth longer than wide, 

 slightly narrowed in front, sides feebly curved; hind 

 angles prominent, acute, divergent, with a short and 

 rather feeble carina. Elytra gradually tapering from 

 base to apex, striate, the strire with close set, oblong 

 punctures; intervals flat, finely punctulate. Length 

 14-17 mm. (Fig. 279.) 



Southern two-thirds of State ; frequent prob- 

 ably throughout. May 30- August 11. Beaten 

 from branches of trees and shrubs, especially 

 those of walnut and hickorv. 



Fig. 279. X 3. 

 (Original.) 



1372 (4183). MONOCREPIDIUS SUTURALIS Lee., Trans. Amer. Phil. Soc., X. 



1853, 482. 



Elongate-oblong, subconvex. Above dull reddish-brown, finely and sparse- 

 ly pubescent with grayish hairs; head, median line on thorax and sutural 

 stripe on elytra, expanding at base and on apical third, sooty brown or 

 fuscous; beneath fuscous, the prosteruum and inflexed portion of thorax 

 reddish-yellow ; antennse and legs pale brownish-yellow. Thorax one-half 

 longer than wide, sides broadly rounded, hind angles finely cariuate; sur- 



