THE SHORT-WINGED SC A 'VEX GET? UEET LES. 



i l:: 



KEY TO GENERA OF TRICFIOPYIXI. 



a. Body broad, narrowed behind, clothed with long, sparse, bristly hairs; 

 thorax narrowed in front, not impressed. LXI. Trichopsexii s. 

 aa. Body narrower ; thorax not narrowed in front, with an apical impres- 

 sion, the bottom of which is membranous. Xenistusa. 



LXI. Trichopsextus Horn. 1877. (Or., "little hair -like.") 



Represented in southern Indiana and southward by one small 

 form having the tibiae distinctly spinulose. middle coxa- contiguous; 

 abdomen and elytra not margined. 



848 (2602). Trichopsexfcs depress! s Horn. Trans. Ainer. Ent. Soc. VI. 

 1877, 88. 



Oblong, depressed. Brownish-yellow, glabrous, very shining and with- 

 out punctures. Thorax nearly twice as wide as long, sides slightly curved, 

 base truncate, hind angles acute. Elytra each quadrate, as long as broad, 

 together not wider and a little shorter than thorax, and with three trans- 

 verse rows of erect yellowish hairs. Abdomen conical and bearing numerous 

 sparse, erect hairs. Length 1.2 mm. 



Crawford County. May 15. Four or five specimens were taken 

 in the nests of Termes flavipes Koll.. beneath flat stones near the 

 mouth of Wyandotte Cave. 



Tribe III. TACHYPORIXI. 

 Rather short, broad species, with a conical abdomen, which is 

 never turned upward when disturbed, as is the habit of most other 

 Staphylinids. They occur-in fungi, dung and other decaying matter. 



KEY TO INDIANA GENERA OF TACHYPORINT. 



a. Abdomen with a narrow margin ; tibia? with a fringe of uneven spinules 

 at tip. 



1>. Mesosternuin not carinate. 



c. Maxillary palpi filiform; body oblong, somewhat depressed, mod- 

 erately tapering: length 3-6 mm. LXII. Tachixus. 

 cc. Maxillary palpi awl-shaped ; body short, convex, abruptly tapering ; 

 length less than 3 mm. LXIII. Tachyporus. 

 hi). Mesosternum carinate: maxillary palpi filiform; front tarsi of male 

 simple. 



(1. Elytra not extended at sides below the body. Cilea. 

 aa. Elytra projected at the sides below the body. LXIV. Erchomus. 

 aa. Abdomen not margined; surface finely pubescent; tibia? with a fringe 

 of equal spines at tip. LXV. Coxosoma. 



LXII. Tachixus Grav. 1802. (Gr.. "swift.") 



A large genus, the species of which are very difficult to separate, 

 unless both sexes are present. The males have the front tarsi always 

 dilated and the last or seventh ventral segment deeply divided, form- 



