THE H1STER BEETLES. 



613 



fifth abbreviated at base, sirtural entire or nearly so; intervals sparsely 

 but distinctly punctured. Mesosternum deeply emarginate. its striae inter- 

 rupted at middle. Front tibiae with four teeth; middle tibiae with three 

 short spines. Length 2-2.5 mm. 



Known from Indiana by three specimens taken by A. B. Wol- 

 cott from beneath bark of pine near Clark Junction, Lake County. 

 July 23. Described from Georgia, where it is said to be rare. 



1169 (3524). Hister coaectatus Lee, Bost. Journ. Nat. Hist, V, 1845, 41, 



pi. I, fig. 6. 



Elongate, parallel, cylindrical. Black, shining; legs and antennae red- 

 dish-brown. Thorax evenly but not densely punctured. Elytra with four 

 entire dorsal striae, fifth one-half and sutural two-thirds the length of ely- 

 tra ; a very short basal subhumeral. Propygidium coarsely and sparsely, 

 pygidium finely, punctured. Length 2.5-3 mm. 



Marion County; rare. May 17. 



1170 (3526). PI is tee basalts Lee. Proc. Phil. Acad. Nat. Sci., 1861, 343. 

 Elongate, subcylindrical. Black, shining; antennae red- 

 dish-brown ; legs piceous. Thorax minutely punctulate on 

 disk ; rather coarsely and sparsely punctured at apex and 

 on sides. Elytra with four entire dorsal striae, fifth and 

 sutural subequal, one-half the length of elytra ; a very short 

 humeral. Propygidium and pygidium rather coarsely and c' 

 sparsely punctured, the latter nearly smooth at apex. Mid- 

 dle and hind tibiae each with three acute teeth on outer 

 edge. Length 4.5-5.5 mm. (Fig. 233.) { 



Marion County: rare. November 22. Two speci- 

 mens from the roots of a hackberry tree in low. open woods. Much 

 more robust than coarctatus. 



Subgenus IV. (Cylistrix.) 



Small, elongate, cylindrical beetles, having the inner marginal 

 stria of thorax absent, outer stria entire and close to the margin ; 

 front tibia? spinose as mentioned in key. One of the three known 

 species has been taken in Indiana. 



1171 (3529). Hister gracilis Lee, Bost. Journ. Nat. Hist., V, 1S45, 41, 

 pl. I, fig. 7. 



Elongate, cylindrical. Piceous black, very shining ; antenna? and legs 

 reddish-brown. Head sparsely punctured ; clypeus concave. Thorax longer 

 than wide, sparsely punctured with fine and coarse punctures intermingled. 

 Elytra with four entire stria\ the fifth apical, extending to middle, sutural 

 slightly longer. Pygidium nearly smooth. Marginal stria of prosternal 

 lobe obliterated. Front tibiae four-, middle three-, hind two-toothed. Length 

 2.5-3 mm. 



Vigo and Marion counties: scarce. May 1— May 21. Occurs 

 beneath bark of elm and other trees in low. moist woods. 



