THE SILKEN FUNGUS BEETLES. 



571 



diverging from the inner margin of the hind coxal cavities; first 

 joint of hind tarsi as long as the next two combined ; eyes with 

 coarse facets. H. Cryptophiltjs. 



&&. Front coxal cavities broadly and completely open behind; basal seg- 

 ments of abdomen variable in length. 

 c. Tarsi with third joint strongly and second joint less strongly lobed 

 beneath, the fourth joint very small ; 5-jointed in both sexes. 

 d. Body distinctly, rather densely pubescent, closely and irregularly 

 punctured; ninth joint of antennae very little wider than 

 eighth ; sides of elytra not margined at base ; prosternal process 

 acute at tip. HI. Telmatophilus. 



dd. Body sparsely and feebly pubescent; ninth antennal joint as 

 wide as the tenth ; sides of elytra margined at base ; prosternal 

 process truncate at tip. 

 e. Punctures of elytra in rows ; thorax transversely impressed at 

 base. IV. Loberus. 



ee. Punctures of elytra few and irregularly distributed; thorax 

 not impressed at base. V. Tomarus. 



cc. Tarsi filiform, simple, and never lobed beneath, 5-jointed in the 

 females, the hind ones 4-jointed in the males; sides of elytra 

 never margined at base and elytral punctures never in rows, 

 f. Mesosternum deeply emarginate, receiving the prosternum ; eyes 

 situated in front of base of head, small, not prominent; body 

 large, for the family, oblong, densely clothed with yellow hair. 



VI. Antherophagus. 



ff. Mesosternum not emarginate ; eyes situated at base of head, con- 

 vex, prominent. 



ff. Sides of thorax with three undulations — at the apex and near 

 apical and basal thirds^the apical angles not more thick- 

 ened; body short, broadly oval and convex, with long hairy 

 covering. VII. Crosimtjs. 



gg. Sides of thorax not undulated. 



//. Thorax with apical angles thickened and obliquely truncate, 

 the lateral edges even except a minute tooth near the mid- 

 dle; basal fovea? very small and feeble. 



VIII. Cryptophagus. 

 hh. Thorax with apical angles not thickened, the lateral edges 

 serrulate with very fine teeth. 



i. Body oval, convex ; thorax with a distinct transverse basal 



groove. IX. Henotictjs. 



ii. Body oblong, parallel, rather strongly depressed; thorax 



without a basal groove, but with two small distinct basal 

 fovea?. X. Pteryngifm. 



I. Diploccelus Guer. 1846. (Gr., "double + cavity.") 



This genus, formerly placed in the next family, comprises small 

 elongate or oblong subdepressed beetles, most easily distinguished by 

 the fine raised lines on the sides of the disk of thorax. The ant en- 



