THE MINUTE TREE-FUNGI IS BEKTEE.S. 



897 



I. Cts Latr. 1798. (Gr., "a worm in wood.") 



This genus is sufficiently characterized in the above table. 

 Casey recognizes 22 species, mostly from the Western and Southern 

 States, 19 of which he describes as new. Of these but four have 

 been taken in Indiana, while three others are herewith described 

 for the first time. 



KEY TO INDIANA SPECIES OF CIS. 



a. Hairs of elytra stiff and bristle-like, sometimes very short and subde- 

 pressed. 



b. Elytra deeply punctured throughout, some or all of the punctures 

 arranged in rows ; apical angles of thorax obsolete ; body narrow, 

 parallel. 



c. Elytral punctures deep, nearly uniform in size, all bearing hairs ; 



color dark reddish-brown or piceous. 1700. creberrimus. 



cc. Elytral punctuation dual, consisting of finer, deeper, seta-bearing 

 punctures, with larger shallow nude punctures intermixed ; color 

 black, shining. 1701. falli. 



bl>. Elytra with none of the punctures arranged in regular rows; usually 

 with larger shallow ones mingled with smaller and deeper ones, 

 which bear the seta?. 



d. Elytra with distinct stiff yellowish bristle-like hairs arranged in 



row^s ; body stouter, more convex. 

 e. Thorax of male without a prominent suberect lobe in front. 

 /. Elytra rugulose, the punctures indistinct; third joint of an- 

 tenna? longer than fourth. 1702. fuscipes. 

 ff. Elytra but slightly rugulose, the large shallow punctures very 

 evident; third joint of antenna? equal to the fourth. 



1703. chevrolatii. 



ee. Thorax of male with a prominent suberect lobe in front; clypeus 

 with two distinct triangular teeth. 1701. cornutus. 



dd. Elytra with very short, scarcely evident, bristles ; body narrow, 

 parallel. 1705. confuses. 



aa. Hairs of elytra long, slender, not bristle-like, but erect and conspicuous ; 

 elytral punctures confused ; last joint of maxillary palpi acutely 

 pointed. 1706. tjrsulina. 



1700 (5388). Cis creberrimus Mellie, Ann. Ent France, VI, 1818, 357. 



Oblong, subcylindrical, narrow, parallel, more or less depressed. Dark 

 reddish-brown ; antenna? and legs dull brownish-yellow. Thorax wider than 

 long, sides feebly rounded into the front margin ; surface densely and rather 

 coarsely punctate. Elytra with prominent stiff and bristle-like yellowish 

 hairs, arranged in rows ; densely punctured, the punctures nearly uniform 

 in size. Length 1.5-2 mm. 



Southern half of State, frequent; Lake County, rare. March 

 1-October 1. Occurs on fungus- covered stumps beneath bark; 

 taken also by sifting. 



