130 FAMILY II. — carabid.t;. 



214 (790). PiATYNUs ATRATUs Lec., Agass. Lake Sup., 1850, 205. 



Elongate-oval, rather slender. Black, shining ; apical iiortion of an- 

 tennae and tarsi piceous. Thorax snbrotund, a little wider than long, the 

 reflexed margin but little wider toward the base; basal impressions deep 

 with a small tubercle. Elytra but little wider than thorax, the strise verj' 

 finely or obsoletely punctate ; intervals distinctly convex. Length s-9 mm. 



Steuben, Laporte and Kosciusko cDunties; frequent. August 

 11 -August 28. A member of the boreal fauna. 



= 215 (791). Platynus meia^'.^kius Dej., Spec. III. 1S27. 152. 



Elongate-oval, rather broad. Black, shining ; tibiae, tarsi and basal 

 joint of antennae dark reddish-brown. Tliorax subrotuud, as wide as long, 

 the margin wider and more strongly reflexed toward the base; depressions 

 large, with a distinct rugosity or tubercle near the angle. Elytra distinctly 

 wider than thorax, the strife of moderate depth, finely punctate. Length 

 8.5-9.5 mm. 



Throughout the State ; common. Hibernates. January 1- 

 Oetober 12. 



216 (71)4 J. PiATYXL's AF^I^;IS Kirby. Fauna Boi'. Amer., IV. 1837, 27. 

 Elongate-oval, rather broad. Black or piceous, shining. Thorax sub- 

 rotund, a little wider than long, side margins narrow, scarcely reflexed 

 toward the hind angles, which are obtuse; depressions wide, shallow and 

 without a tubercle. Elytra one-half wider than thorax, strife shallow, not 

 punctured, the fifth usually with a dilated shallow impression near the 

 apex ; intervals flat. Length 8.5-9.5 mm. 



Lake, Starke and Kosciusko counties ; scarce. Occurs along the 

 sandy beaches of lakes. April 9-October 24. 



P cario Lec, length 8-9 mm., was described from Lake Su- 

 perior and may possibly occur in northern Lidiana. 



217 (796). Platynls cokvus Lec.. Proc. Phil. Acad. Nat. Sci.. IS60, 319. 

 Elongate-oval ; rather broad. Piceous black, shining. Thorax slightly 



broader than long, sides rounded into base : margins rather broad, narrowly 

 reflexed; basal depressions wide, shallow, without a trace of tubercles. 

 Elytra oblong, much wider than thorax ; strife rather deep, not punctured : 

 intervals slightly convex, alutaceous. Length 9.5 mm. 



Laporte and Kosciusko counties ; rare. October 21-October 22. 

 Taken beneath rubbish along the beach of lakes. Our only species 

 having all three dorsal punctures on third stria. A member of the 

 boreal fauna. 



218 (800). PiATYNUs cuPKiPENNis Say, Trans. Amer. Phil. Soc, II. 1S23. 



50; ibid. II, 474, 

 Elongate, rather broad. Green, strongly polished; disk of elytra cu- 

 ,'Teous; under surface blackish-bronzed. Thorax longer than wide, the 



