THE MINUTE TREE-FUNGUS BEETLES. 901 



Jackson County; rare. April 12. Taken by Dury at Cincin- 

 nati and probably occurs sparingly throughout the southern third 

 of the State, on fungus-covered logs. 



VI. OCTOTEMNUS Mellie. 1847. (L., "eight + cut or joint. ") 



Differs from Ennearthron by the characters given in generic 

 key and also by the more oval outline of body and absence of male 

 sexual characters of head and thorax. One of the two species oc- 

 curs in Indiana. 



1712 (- -). OCTOTEMNUS I^EVIS Casey, Journ. N. Y. Ent. Soc., VI, 1898, 91. 



Rather short and broadly oval, polished. Dull reddish-brown to black- 

 ish. Thorax but little wider than long, circularly rounded at apex, the 

 sides feebly diverging to base; front and hind angles broadly rounded; sur- 

 face finely, sparsely but distinctly punctured. Elytra one-half longer than 

 wide, distinctly wider than thorax and barely twice as long; surface with 

 a few scattered erect hairs on apical half, minutely and sparsely punctate. 

 Length 1.3-1.6 mm. 



Marion, Putnam and Posey counties; scarce. March 6-Novem- 

 ber 10. Probably hibernates. Taken from beneath moss on trunks 

 of beech stumps. 



VII. RuiPiDANDRUs Lee. 1862. (Gr., ' ; a fan + male. ") 



This genus is represented in the eastern United States and In- 

 diana by a single species, readily separated from other members of 

 the family by the characters given in the key. 



1713 (5407). RHIPIDANDRUS PARADOXUS Beauv., Ins. Afr. et Amer., 1805, 



173. 



Oblong-oval. Blackish or piceous brown ; antennae and legs yellow. 

 Antenna 1 with joints 5-11 strongly pectinate in male; gradually thickened 

 on the outer side, with the middle portion snbserrate in female. Thorax 

 one-half wider than long, hind angles rectangular, front angles rounded, 

 surface densely and coarsely punctate. Elytra finely but distinctly ribbed 

 or sulcate, the depressions with coarse subquadrate punctures. Length 2- 

 2.8 mm. 



Putnam County; rare. June 28. Occurs beneath bark of oak 

 stumps. 



Family XLVIIT. SPITINPID/R. 

 THE SPHINWS BEETLES. 



This family is represented in the United States by only three 

 small species, which occur in dry fungi on the trunks of trees and 

 logs. They have the head short, prolonged into a short, broad 

 muzzle; labrum distinct; antenna 1 10-jointed, inserted near the 



