134 



FAMILY IT. OAKABIDJE. 



circular, deep. Elytra! strlse moderately deep, distinctly punctured; in- 

 tervals slightly convex. Length 8.5 mm. 



Rare. A southern species, one specimen of which was taken 

 near Cannelton, Perry County, May 14. 



230 (826). Platynus crentstriatus Lee, New Sp. N. Am. Col., I, 1863, 9. 



Elongate, rather slender. Black, shining; base of antennae and legs 

 reddish-yellow. Thorax oval, a little longer than wide, narrowed on basal 

 half; basal impressions small, deep. Elytral striae deep, strongly punc- 

 tured; intervals one to four distinctly convex, the others nearly flat. Length 

 7.5-8 mm. 



Southern half of State; frequent; scarce in the northern coun- 

 ties. Probably hibernates. March 7-July 28. 



*231 (827). Platynus rubripes Zimrn., Trans. Amer. Ent. Soc, II, 1869, 

 244. 



Elongate, rather slender. Black, shining ; palpi and antennae brownish- 

 yellow ; legs reddish-brown. Thorax almost as long as wide, sides rounded 

 into base; impressions broad, shallow with a small deep fovea. Elytral 

 stria? deep, finely but distinctly punctured ; intervals slightly convex. Length 

 6.2-7 mm. 



Throughout the State; common. Hibernates, January 5-Oc- 

 tober 1. A smaller species than the preceding; with darker legs 

 and more finely punctured strias. 



*232 (828). Platynus punctiformis Say, Trans. 



Amer. Phil. Soc, III, 1823, 58; ibid. 

 II, 481, 536. 



Elongate, rather robust. Black, shining; base of 

 antennae, tibiae and tarsi reddish-brown; femora pice- 

 ous. Thorax subrotund, convex, narrowly margined, 

 hind angles rounded ; basal impressions shallow, with 

 a large, round, deep fovea. Elytra rather deeply stri- 

 ate, very nnely and distinctly punctuate only on basal 

 half; intervals subconvex, finely alutaceous. Length 

 7-9 mm. (Fig. 77.) 

 Fi g . 77. x4. (Original.) Throughout the State; frequent. February 

 13-October 14. Larger and broader than rubripes, with still more 

 finely punctured striae. 



Group F. 



Winged species of slender form, black or piceous in color with 

 base of antennae and legs yellow or reddish-brown ; thorax oval with 

 margin narrowly reflexed, becoming broader toward the hind 

 angles, which are rounded and indistinct ; basal impressions narrow, 

 sometimes nearly obsolete. Elytra elongate-oval, twice as wide as 



