THE GROUXT) BEETLES. 99 



metathorax long ; doi-sal punctures three ; hind tarsi with three or 

 four joints grooved on outer side ; basal impressions of thorax deep, 

 single ; -odngs wanting except in erythropus. 



KEY TO SPECIES OF GROUP D. 



(/. Scutellai- stila wanting ; thorax subquadi'ate, bind angles strongly 

 rounded. 142. ekvthbopiis. 



II (I. Scutellar stria long. 



6. Elytral striae not punctured; liiud angles subreetangular, sliglitly 

 prominent. 143. patbueus. 



hb. Basal half of elytral striae punctured ; bind angles obtuse. 



144. FEMOEAUS. 



142 (.">s.Ti. Ptebostichus eeythropus Dej., Spec. Ill, 1827, 



240. 

 Elongate-oval. Black, strongly shining; antennae and 

 legs reddisb-brown. Thorax nearly square, sides feebly 

 curved, widely depressed near the hind angles, which are 

 strongly rounded; basal impressions and elytral striae not 

 punctured. Length 8-8.5 mm. (Fig. 61.) 



Throughout the State, frequent; usually beneath 

 rubbish in sandy localities near water. Probably hi- 

 bernates. March 19-November 5. 



143 (587). Ptebostichus patruelis Dej., Spec. V, 1S2'.), 759. 

 Elongate, slender, subcylindrical. Black, feebly shining; antennae and 



legs dark reddish-brown. Thorax feebly narrowed behind, sides mod- 

 erately rounded, basal impressions sparsely punctured. Elytral striae deep; 

 intervals nearly flat. Length 7.5 mm. 



Throughout the State; more frequent in the northern half. 

 March 26-October 25. 



*144 (588). Ptebostichus femoralis Kirby, Faun. Bor. Amer., IV, 1837, 

 31. 

 Resembles the preceding, but the form is less slender, the hind angles 

 of thorax more obtuse and the elytral striae finely punctured at least as 

 far as the middle. Length 7.5 mm. 



Throughout the State; common. Hibernates as imago. Feb- 

 ruary 6-December 18. 



XXV. EvARTHBUS Lee. 1852. (Gr., " good -i- joint.") 



Black beetles of medium or large size, possessing the characters 

 of the tribe Pterostichini as above given. Last joint of labial palpi 

 shorter than the next to last, the latter with several long setae in 

 front. Elytra with rounded humeri and one dorsal puncture, lo- 

 cated near the third stria just behind the middle. Hind tarsi not 

 grooved on outer side. Wings wanting; mandibles striate. Pro- 

 sternum not margined behind. 



