TIM; <ji;orxi> UKETLES. !>:> 



11'5 (545). I'TEKos'ficiirs coKU'im's Newm., Eiitom. Mag., 

 V, 18:!X, 3X0. 



Elongate-oval, rather robust. Black, shining; antenna 

 and legs pic-eons. Thorax quadrate, somewhat narrowed be- 

 hind, sides broadly rounded, hind angles obtuse; basal im- 

 pressions broad, deep, rugosely punctured. Elytral striae 

 deep, not punctured; intervals tlat or nearly so. Length 

 15-17.5 nun. (Fig. 58.) 



Throughout the State, frequent ; more so iu the 

 northern counties. May 13-October 3. Occurs be- (Aft ' e g r ' Leng) . 

 neath logs and stones in open woods. In this and the 

 next two species the side margins of thorax are wider and more 

 reflexed than in any of those preceding; the two (rarely three or 

 four) dorsal punctures are located on the second stria, one before, 

 the other behind the middle. In one specimen from Cass County 

 there are four distinct dorsal punctures on the second stria. From 

 the keys, as usually given, it was at first referred to supcrciliosus 

 Say, but the thorax is not narrowed behind as in that species and 

 the elytra are jet black, not purplish. I have concluded, there- 

 fore, that it is but a sport of coraci>nix, with which it agrees in all 

 other respects. 



P. lachrymosus Newm. and P. supcrciliosus Say, both 15 mm. 

 in length, very probably inhabit the State. The former has been 

 taken by Dury at Cincinnati and the latter in Michigan. 



120 (546). PTEROSTICHUS STYGICUS Say, Trans. Amer. Phil. Soc., II, isu:;. 



41 ; ibid. II, 407. 



Closely allied to the preceding. Distinguished principally by the small 

 tubercle in the thoracic impressions ; carina of hind angles very short. 

 Elytral intervals more convex. Length 14-10 mm. 



Very common throughout the State beneath logs, etc., in open 

 woods. March 31-October 20. The so-called "tubercle" is only 

 an elevated space between the two striae of the basal impression. It 

 is my opinion that a large series of specimens will show cot-acinus 

 to be only a form of stygicus, Say's name having priority. 



127 (547). PTEROSTICHUS RELICTUS Newm., Entom. Mag.. V, 1838, 387. 



Resembles both cnntcinus and 8t)i</icii#. Thorax longer, more distinctly 

 narrowed behind and without carina at bind angle or tubercle in basal im- 

 pressions, the latter, therefore, being single. Elytral stria 1 deeper, with 

 narrower, much more convex intervals. Length 10-17 mm. 



Putnam. Vermillion, Vigo and Knox enmities: scarce. May 25- 

 September 18. Occurs beneath stones in deep ravines. 



