THE GROUND BEETLES. 57 



dd. Strife not extending to base of elytra ; tip of elytra rufous. 



.'/. Elytral strijie strongly punctate ; thorax ovate, broader than 



long. 54. H.EMOKRHOIDALIS. 



!JU- Elytral striae feebly punctate; thorax quadrate-globose. 



55. TEEIIINATUS. 



hh. Third interval of elytra with two punctures or none at all. 



U. Aiiical spur of front tibkc very short ; elytral strire coarsely punc- 

 tured, alisent <;u apical third: tliorax longer than wide. 



BKEVISPINUS. 



hh. Apical spur of front tibim long. 



i. Elytral stria' deep, entire; clypeus bisinuate and with three 

 teeth. 56. sph.ericollis. 



;/. Elytral strife partly abbreviated at base; clj-peus truncate. 

 ./. Thorax ovale, broader than long. tbuncatus. 



jj. Thorax oval, not wider than long. 57. ekythroceri-s. 



aa. Elytra with third, fifth and seventh intervals each furnished with sin- 

 gle rows of setfc-bearing punctures ; thorax globose ; elytral stria^ 

 coarsely punctured. 5S. HiSPint's. 



51 (225). DrscHiKirs nigripes Lcc, Trans. Amer. Phil. Soc, X, 1853, ?>'M\. 



Elongate, slender. Black, strongly shining; anteunse piceous, the 

 basal joint, tibife and tai-si dark reddish-brown. Clypeus bidentate. Thorax 

 globose with a very fine, median impressed line. Elytial strise fine, dis- 

 tinctly punctured only on basal half. Length ;:!-3.2 mm. 



Lake County ; rare. May 5. A member of the boreal fauna. 



52 (2;ii2). Dyschirius globulosts Say, Trans. Amer. 



Phil. Soc. II, 1x2:5, 23 ; ibid. II, 452. 

 Black or dark reddish-brown, strongly shining ; legs 

 and antennae rufous. Thorax ovate, broader than long, 

 disli with a median impressed line. Elytral striie ex- 

 tending to base, distinct, coarsely punctate ; wholly ab- 

 sent on apical third. Length 2.7-3 mm. (Fig. 4.3.) 



Throughout the State, frequent; much more so 

 northward, ilareh 5-August 24. Often taken 

 from beneath the loose bark of logs in low ground ,n ■ • 1 > 



^ Fig. 43. (Original.) 



woods. X 13. 



53 (231). Dtschirius longdlus Lee, Agass. Lal^e Sup., 18.50, 204. 



Allied to the preceding but a little smaller and having the antenufe 

 fuscous at apex. Thorax subgl(ib;;se (the length equal to the breadth) and 

 not narrowed in front. Elytra more elongate, with deeper stria', the punc- 

 tures of which are absent on apical h ilf. Length 2.5-2.7 mm. 



Throughout the State; frequent. March 17-October 1. 



B. aiicnlii.s- Lee., black, shining, and 3.8 mm. in length, is also a 

 member of the boreal fauna and very likely occurs in the northern 

 third of the State. 



