THE CLICK BEETLES. 759 



antennae short, nearly equal, together a little longer than fourth. Thorax 

 slightly longer than wide, convex, narrowed on basal third ; hind angles 

 short, obtuse, not carinate ; surface finely and rather densely punctate. Ely- 

 tra striate, the striae punctate. Length 5.5 mm. 



Lawrence County ; rare. June 5. Beaten from sassafras. De- 

 scribed from Pennsylvania. 



Campylus denticornis Kirby, black witli paler margins, elytra 

 bronzed-piceous, length 11 mm., is recorded from Pennsylvania and 

 Ohio. 



Pityobius anf/niiius Lee., lone:, parallel, blackish-piceous, thorax 

 \vith a dee]). median groove, length 20-25 mm., occurs on pine in the 

 Southern States and New Hampshire. 



XXXV. ATHOUS Ksch. 1820. (Gr.. "slow.") 



Differs from Lhnoninx in having the first tarsal joint much 

 longer than second. In all of our species but one, the second and 

 third tarsal joints are slightly lobed beneath and the thorax is dis- 

 tinctly longer than broad. Four species have been taken in Indi- 

 ana, while two others perhaps occur. 



KEY TO INDIANA SPECIES OF ATHOUS. 



(i. Second and third tarsal joints lobed beneath. 



b. Hind angles of thorax not carinate, the apex rounded. 



c. Pale chestnut brown ; size larger, 11-14 mm. 1443. BRIGHTWELU. 

 cc. Dark sooty brown or picemis; thorax sometimes pale with darker 



median stripe; smaller, not over 10 mm. 1444. ACANTHUS. 



///*. Hind angles of thorax distinctly carinate. 



d. Second joint of antenna? much smaller than third, the latter equal 



to fourth. 



e. Dull reddish- or sooty-brown. 1445. CUCULIATUS. 



eo. Black, the bases of thorax and elytra narrowly yellow. 



1440. SCAPULARIS. 



(Id. Second and third joints of antenna? small, equal : black, base of 



thorax reddish-brown. POSTICUS. 



aa. Second and third tarsal joints not lobed beneath. RUFIFRONS. 



1443 (43S4). ATHOUS BRIGHTWELLI Kirby, Faun. Bor. Amer.. 1837, 146. 



Elongate, slender. Pale dull brown, sparsely pubescent with yellowish 

 hairs. Third joint of antenna? more than twice the length of second, nearly 

 equal to fourth. Thorax one-half longer than broad, narrower than elytra; 

 sides straight, feebly rounded at middle, margin flattened at front angles; 

 hind angles compressed, obtusely rounded, with margin slightly reflexed ; 

 disk densely, rather finely punctate, usually with a median transverse line 

 on basal half. Elytral stria 1 deeply and rather coarsely punctured; inter- 

 vals subconvex, finely punctate, transversely rugose. Length 11-18 mm. 



Throughout the State: scarce. May 12-July 5. Occurs on 

 grass and foliage of oak. beech and hickory. A single specimen 



