3-tO FAMILY XI. STAI'HYLIXIDJE. 



KEY TO INDIANA GENERA OF BOLITOCHARINI. 



n. Mesosternal process broadly truncate or emarginate behind; middle 

 coxse widely separated; labial palpi with two joints only. 



IV. GYROPH.ENA. 



mi. Mesosternal process more or less pointed behind; middle coxa' moder- 

 ately separated or contiguous. 

 lj. Labial palpi with two joints only. 



c. Hind tarsi with the first joint at least as long as the second and 

 third together; front tarsi with the first joint distinctly longer 

 than the second: lignla very broad and short, very broadly 

 rounded in front; labial palpi short, their first joint swollen. 



PLACUSA. 



cc. Hind tarsi with the first joint not or only a little longer than the 



second; front tarsi with the first three joints equally long; ligula 



very narrow; labial palpi with both joints more or less elongate. 



(I. Labial palpi moderately long, not bristle-like; ligula moderately 



narrow, split at tip ; body depressed. V. HOMALOTA. 



dd. Labial palpi very narrow, prominent, stiff, bristle-like; ligula 



very narrow, entire, more or less narrowed toward tip; body 



rather convex. SILVSA. 



bb. Labial palpi with throe joints. 



e. Ligula entire. 



/. Labial palpi with the second joint as long as and scarcely nar- 

 rower than the first. VI. LEPTUSA. 

 ff. Labial palpi with the second joint longer and narrower than the 

 first; thorax wider than elytra. VII. PHILOTERMES. 

 ee. Ligula split, or bifid at tip. VIII. P.OLITOCHARA. 



IV. GYROPiLKNA^Iannh. ism (Gr., "a circle + to show.") 



Form short and broad; antenna' rather short; head strongly 

 transverse; eyes prominent; third joint of maxillary palpi thick- 

 ened; thorax short, broad, distinctly margined; elytra large, abdo- 

 men short and broad; surface smooth, shining, almost destitute of 

 hairs or punctures. The species live in fungi and are gregarious. 



KEY TO INDIANA SPECIES OF GYROPH.ENA. 



'/. Anteniue abruptly dilated beyond the fourth joint, the last seven joints 



forming n loose parallel dub. 

 t>. Klytra and abdomen almost wholly black or piceons. 



';:;.">. coiatrscviA. 



l>~h. L'l.vtra and abdomen almost wholly pale. <;.",(;. I.OHATA. 



<ni. Autennal joints gradually enlarged from fourth joint to tip: abdomen 



blcolored. 



G. Eyes always separated by more than twice their own width; base 



and apex of abdomen pale. n.37. VIXTT.A. 



cc. Eyes more convex, separated by not more than their own width; 



basal half of abdomen pale, apex black. r.38. DISSIMILIS. 



