THE SILKEN FUNGUS BEETLES. 



579 



r. Antennae distinctly longer than head and thorax, with joints four, 

 six and eight longer than wide. 1102. elongata. 



cc. Antennae scarcely longer than head and thorax, the fourth, sixth and 

 eighth joints not longer than wide. 1103. subfuscata. 



1101 (3380). C^enoscelts ferruginea Sahib.. Ins. Fennica, I, 1817, 58. 

 Elongate-oval. Pale reddish-brown, the pubescence distinct, fine*and 



sparse on elytra. Antennae stout, reaching base of thorax, the first joint 

 of club much smaller than the other two. Thorax convex, finely and closely 

 punctured, the apex narrower than base. Elytra oval, two-thirds longer 

 than wide. Length 1.8 mm. 



Marion County; scarce. June 4-October 31. Taken beneath 

 bark of oak logs in low moist woods. 



C. testacea Zimm., length 1.5-1.8 mm., is known from Kentucky. 



1102 ( ). CLenoscelis elongata Casey, Journ. N. Y. Ent. Soc, VIII, 



1900, 107. 



Oblong-oval. Dark reddish-brown. Antennae stout, not quite half the 

 length of body. Thorax more than one-half wider than long, strongly and 

 rather densely punctured. Elytra distinctly wider than, and three times 

 as long as thorax, finely, rather sparsely and irregularly punctured. Length 

 1.8-2 mm. 



Marion and Putnam counties; frequent. March 6-April 28. 

 Taken by sifting. 



1103 ( ). CLenoscelis subfuscata Casey, Journ. N. Y. Ent. Soc, VIII, 



1900, .107. 



Elongate, slender, parallel. Reddish-piceous or fuscous. Antenna; 

 reaching base of thorax, the first joint equal in length to next two. Thorax 

 one-half wider than long, finely and densely punctate. Elytra slightly wider 

 and more coarsely punctate than thorax. Length 1.8 mm. 



Marion County; rare. April 28. 



Agathengis subnifens Casey, piceous, elytra paler, length 1.2- 

 1.4 mm., was described from Michigan; while A. pumilio Casey, 

 thorax more distinctly impressed at base, piceous, elytra brownish- 

 yellow, length 1.3-1.5 mm., is known from Massachusetts to Iowa. 



XII. Atomaria Steph. 1830. (Gr., "an atom.") 



Very small, shining, oblong-oval, sparsely pubescent beetles, 

 having the first two joints of antennal club about as long as wide ; 

 thorax narrowed in front and concave at base. Five species have 

 been taken in Indiana. 



KEY TO INDIANA SPECIES OF ATOMARIA. 



a. Elytra unicolorous or only slightly darker towards the base. 



h. Second and third antennal joints elongate, subeqnal ; base of thorax 

 straight or feebly curved. 



