384 



FAMILY XI. STAPH YLIXIDiE. 



P. varians Payk., 5-6.5 mm. ; P. discoideus Grav., 4-5.5 mm., and 

 P. thermarum Aube, 3 mm. in length, all have a known distribution 

 which should bring them within the limits of the Indiana fauna, 

 but no one of them is represented in the collection at hand. 



Group C. 



In this group the punctures of the dorsal rows of thorax are five 

 in number and the front tarsi of males are rather widely dilated; 

 those of females more narrowly dilated. 



KEY TO INDIANA SPECIES OF GEOUP C. 



a. Males with the last two ventral segments notched at apex; color vari- 

 able ; surface densely punctate ; length 4.5-5.5 mm. alumnus. 

 ad. Males with the last segment only notched. 

 1). Elytra red. 



c. Thorax entirely red. distinctly narrowed in front, much wider than 

 head and as broad as the base of elytra. 737. thoeacicus. 



cc. Thorax black. 



d. Thorax distinctly narrowed in front; body spindle-sbaped. 



738. FUSIFOEMIS. 



dd. Thorax scarcely narrowed in front ; form parallel ; legs and base 

 of antennae pale yellow. 739. fulvipes. 



1)1). Elytra black or piceous. 



e. Legs and antenna? wholly black ; elytra black ; length 10 mm. 



740. SCHWAEZI. 



ee. Legs and base of antenna? paler ; general color piceous. 

 f. Head oval, distinctly narrowed behind the eyes. 

 g. Elytra and abdomen opaque, very densely and finely punc- 

 tured; antenna? rather short and stout; joints 5-10 broader 

 than long ; length 4.5-5 mm. 741. micans. 



gg. Elytra more or less shining, neither densely nor finely punc- 

 tate. 



h. Antenna? slender, the joints all longer than wide; length 

 6.5-8 mm. 



i. Basal joint of antenna? pale ; abdomen not coarsely punc- 



tate 742. LOMATUS. 



U. Antenna? entirely piceous : elytra more coarsely, abdomen 

 more sparsely, punctate than in lomatus. cunctans. 

 hh. Antenna? shorter, the outer joints not longer than wide: ab- 

 domen quite coarsely punctured; length 5 mm. jequalis. 

 ff. Head quadrate, not narrowed behind the eyes; abdomen finely 

 punctulate ; elytra brownish ; length 5 mm. 743. bbunneus. 



737 (2184). Philonthus thoeacicus Grav., Mon. Col. Micr.. 1806. 170. 



Slender, subfusiform. Piceous, shining; thorax and elytra dull red; 

 legs and three basal joints of antenna? brownish-yellow. Antenna? reaching 

 beyond base of thorax, joints all longer than wide. Thorax described in 

 key. Elytra together broader than long, not longer than thorax, rather 



