362 FAMILY XI. — STAPHYLINin^. 



KEY TO INDIANA SPECIES OF OXYPODA. 



o. Lar,!,'er, .j-3.2 mm. ; dark brown, elytra and legs paler. 



688. SAQULATA. 



aa. Smaller, not over 2.5 mm. 



6. Thorax subparallel and curved at the sides, the apex almost as wide 

 as the base, the latter as wide as the base of elytra, 

 c. Dull brownish-yellow ; abdomen pieeous, pale at tip, distinctly 

 tapering from base to apex. 689. amica. 



cc. Reddish-brown ; abdomen with only the fourth and fifth dorsal seg- 

 ments pieeous, its sides nearly parallel. 690. palustbis. 

 lib. Thorax subconical or with the apex distinctly narrower than base. 

 <?. Body rather slender ; abdomen feebly tapering from base to apex ; 

 color chestnut brown. 691. obliqua. 

 dd. Body linear ; abdomen straight and nearly parallel ; color brownish- 

 yellow. 692. PEEEXILIS. 



CSS (2062). OxYPODA SAGULATA Erich., Gen. Sp. Staph., 1840, 146. 



Elongate, rather robust. Dark brown to pieeous, sparsely clothed with 

 tine yellowish hairs; elytra reddish-brown; legs and basal joints of antennre 

 liale yellow. Anteniioe reaching base of thorax, the second joint slightly 

 longer than third. Thorax one-half wider than long, the base as broad as 

 the elytra, sides moderately curved ; angles rounded, the front ones de- 

 llexed; disk finely and rather closely punctate. Elytra obe-third longer 

 than thorax, more coarsely and densely punctate. Abdomen at base slightly 

 narrower than elytra, distinctly tapering behind the middle, densely punc- 

 tate, the first two segments impressed at base. Length 3-3.2 mm. 



Thi'oughout the State; scarce. May 13-October 31. Taken 1),y 

 sifting'. 



CS!) ( ). OxYPOiiA AMICA Casey, T^'ans. Acad. Sci. St. L., XVI, ]9(i(i, 312. 



Elongate, subfusiform. Dull brownish-yellow, clothed with rather long, 

 shaggy pubescence; head and abdomen pieeous, the latter pale ;it tip; an- 

 tennffi fuscous, the basal joints and legs pale. .Vntenme reaching to basal 

 third of elytra, the second joint one-thii-d longer than third. Thorax three- 

 fourths wider than long, sides strongly curved, surface, as well as that of 

 elytra and abdomen, very finely and rather closely punctate. Elytra about 

 two-fifths longer than thorax. Abdomen at base one-third narrower than 

 elytra, thence feebly tapering to aiiex. the first three dorsal segments deeply 

 impi'essed at base. Length 2-2.2 mm. 



Throughout thf State; one of the most eomnioii members of the 

 suhfamily. January IS-Deecmber S. Taken by sifting vegetable 

 debris in h)\v. moist Avoods. Tlibei'nates beneath mullein leaves, bot- 

 f(im rails of fences and other cover. 



CDO ( — ' — ). OxYPoiiA PAi.u.sTRis sp. mn-. 



Ratlu'r stout, subfusiform. Dark n'ddish-In-nwn. shining, sparsely and 

 finely puliescenl ; head, elytra and f'ourlh and lil'lh dorsal segments of ab- 

 domen picoous. .\nloniiii' reiiohing middle ol' elytra, second and third loints 



