612 



FAMILY XXV. HISTERID-E. 



d. Sutural stria entire. 



c. Form subcylmdrical ; nil the dorsal stria* entire. parallelus. 



ec. Form dopivssed ; fifth dorsal abbreviated at base. 1168. ^quus. 

 dd. Sutural stria abbreviated at base: form cylindrical. 

 /. Thorax evenly punctured : mesosterual stria entire. 



1169. COARCTATVS. 



ff. Thorax nearly smooth at middle ; mesosterual stria broadly inter- 

 rupted. 11 TO. BASALIS. 



*116o (3519). Hister caroltnds Payk.. Monog. Hist.. 1811, 45. 



Broadly ovate, subdepressed. Black or pieeous, shining; 

 leg's reddish-brown. Thorax with outer marginal stria pres- 

 ent, very line : disk smooth. Elytra with three entire dorsal 

 stria?, fourth and fifth apical, reaching the middle, sutural 

 somewhat, longer. Front tibia? with five rather fine teeth : 

 middle tibia? with four, hind tibia? with three, short spines. 

 Length 3-3.S mm. (Fig. 232.) 



Probablv our most common species of Hister ■ 

 (Original.) found throughout the State, especially m low. moist 

 woods beneath bark and logs. January 11-November 30. Often 

 gregarious in winter. 



*1166 (3520). Hister lecoxtei Marsuel. Monog. Hist.. 1S53, 273. pi. T. 

 fig. 17. 



Oblong-oval, strongly depressed. Thorax smooth at middle; sparsely 

 and rather coarsely punctured on sides, the marginal stria entire. Elytra 

 with three entire dorsal stria?, fourth apical, extending to middle or beyond, 

 fifth short, apical : sutural often wanting, sometimes as long as fifth. 

 Propygidium coarsely but very sparsely punctured. Front tibia? with four 

 teeth ; middle tibia? with three, hind tibia? with two. short spines. Length 

 2.5-3 mm. 



Throughout the State: common. February Id—December 29. 

 Occurs beneath the close-fitting hark of logs and stumps, especially 

 that of oak and elm ; rarely on fungi or at sap. 



1167 (3521). Hister auseliawus Horn. Proc. Arner. Phil. Soc. XIII. 1S73. 



297. 



Resembles lecontei but more depressed. Thorax almost smooth at 

 sides. Elytra with three entire dorsals, fourth very short, apical ; fifth 

 and sutural wanting. Length 3 mm. 



Lawrence County ; rare. .May 23. Taken from decaying fungi. 

 Described from Louisiana, hut since taken by Dury near Gin 

 cinnati. 



II. parallelus Say. length 2.5 mm., is known from Georgia south- 

 ward, hut may occur in southern Indiana. 



1168 (3523). Hister .eqeus Lec., X. Sp. X. Amer. Col., I, 1S63. 61. 

 Oblong, strongly depressed. Black or piceous-brown. shining. Thorax 



finely and rather densely punctured. Elytra with four entire dorsal stride. 



