THE SHINING FUNGUS BEETLES. 



491 



coxae small, rounded and widely separated; hind ones oval or trans- 

 verse, also widely separated ; tarsi 5- jointed, long and slender. 



About 200 species of Scaphidiidae are known, 41 of which have 

 been described from the United States. The principal literature 

 treating of the family is as follows: 



LeConte.— ' Synopsis of the Scaphidiidae of the U. S.," in P'roc. 



Phil. Acad! Nat. Sci, 1860, 321-324. 

 Casey.— ' Synopsis of the Scaphidiidae," in Ann. N. Y. Acad. 

 Sci., VII, 1893, 510-533; Journ. N. Y. Entom. Soc, VIII. 

 1900, 55-60. 



Representatives of four of the seven genera comprising the 

 family have been taken in Indiana, while those of two others may 

 occur. 



KEY TO INDIANA GENERA OF SCAPHIDIID.E. 



a. Scutellum distinct; antennae with a broad, abrupt and somewhat flat- 

 tened 5-jointed club ; elytra 1 punctures in rows. 

 &. Hind tibiae not spinous ; eyes emarginate ; hind angles of thorax acute 

 and somewhat prolonged backward. I. Scaphidium. 



hi). Hind tibiae with rows of small spines; eyes entire; hind angles of 

 thorax not prolonged. Cyparium. 

 aa. Scutellum minute or wanting; antennae slender, without distinct club; 

 elytral punctures, when present, scattered, 

 c. Third antenna! joint elongate and cylindrical; scutellum usually in- 

 visible.' when present transverse. 



d. Body oval; sutural stria of the elytra reaching the base; hind 



coxae widely separated. H» B.eocera. 



del. Body narrowed, more or less compressed; sutural stria not reach- 

 ing the base; hind coxa? less separated. III. Toxidium. 

 cc. Third antennal joint very short, wedge-shaped or triangular, nar- 

 rowed to the base ; scutellum present, minute, triangular. 



e. Length 1.5 or more mm. ; hind coxal plates very short and their 



curve developed only on the inner side. IV. Scaphisoma. 



ee. Length less than 1 mm.; hind coxal plates semi-elliptic; antennae 

 shorter and stouter. Scaphiomicrus. 



I. Scaphidium Oliv. 1791. (Gr., "tub or boat + small. ") 



Here belong our most common members of the family, readily 

 distinguished by the larger size, emarginate eyes and produced hind 

 angles of thorax. The male is known by having a large, depressed, 

 punctate and pubescent area on the middle part of the metasternum. 

 One species and two varieties have been taken in the State. 



KEY TO INDIANA SPECIES OF SCAPHIDIUM. 



0. Elytra each with two to four short rows of large punctures. 



h. Elytra each with two transverse, reddish spots which extend inward 

 two-thirds the width. 912. quadriguttatum. 



