TITE GROUND BEETLES. 57 



(1<1. Stri:e not extending to base of elytra ; tip of elytra rufous. 



//. Elytral stria 1 strongly punctate; thorax ovate, broader than 



lOUg. 54. H.EMORRHOIDALIS. 



gg. Elytral stria? feebly punctate; thorax quadrate-globose. 



55. TERMINATES. 



1>I>. Third interval of elytra with two punctures or none at all. 



//. Apical spur of front tibue very short; elytral stria* coarsely punc- 

 tured, absent on apicai third; thorax longer than wide. 



BREVISPINUS. 

 /(//. Apical spur of front tibi:e long. 



/. Elytral strife deep, entire; clypeus Insinuate and with three 

 teeth. 56. SPH^ERICOLLIS. 



//. Elytral stri;e partly abbreviated at base; clypeus truncate. 

 ./. Thorax ovate, broader than long. TRUNCATUS. 



jj. Thorax oval, not wider than long. 57. ERYTHROCERUS. 



ad. Elytra with third, fifth and seventh intervals each furnfshed with sin- 

 gle rows of set a*-bea ring punctures; thorax globose; elytral stri:e 

 coarsely punctured. 58. HISPIDUS. 



51 (2:25). DVSCHIRIUS NIGRIPES Lee.. Trans. Ainer. Phil. Soc.. X. IS.",::. 3!>r.. 



Elongate, slender. P.lack. strongly shining; antenna* piceous, the 

 basal joint, tibia 1 and tarsi dark reddish-brown. Clypeus bidentate. Thorax 

 globose with a very tine, median impressed line. Elytral stria' fine, dis- 

 tinctly punctured only on basal half. Length 3-3.2 nun. 



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



52 (232). DYSCHIRIUS GLOBULOSUS Say, Trans. Ainer. 



Phil. Soc.. II. 1823, 23; ibid. II. 452. 



Black or dark reddish-brown, strongly shining; legs 

 and antemue rufous. Thorax ovate, broader than long. 

 disk with a median impressed line. Elytral stri;e ex- 

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

 sent on apical third. Length 2.7-3 mm. (Fig. 43.) 



Throughout the State, frequent; much more so 

 northward. March 5- August 24. Often taken 

 from beneath the loose bark of loy's in low ground 



Fig. 43. (Original.) 



woods. x is. 



53 (231). DYSCHIRIUS LONGULUS Lee., Agass. Lake Sup., 1850. 204. 



Allied to the preceding but a little smaller and having the antenna- 

 fuscous at apex. Thorax subglolmse (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 half. Length 2.5-2.7 mm. 



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



D. ft'ueolus 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. 



