THE CLICK BEETLES. 



737 



Throughout the State ; frequent. June 30-Septembef 26. One 

 was noted emerging from pupal stage on the former date. Occurs 

 beneath bark of decaying walnut, mulberry and other stumps and 

 logs. 



1393 ( 4275). Ludius abruptus Say, loc. cit., 253; ibid. I, 389. 

 Elongate, moderately robust. Black, shining, clothed with fine black, 



silky pubescence; antennae and legs piceous, the former reaching tips of 

 hind angles of thorax in male, shorter in female. Thorax as wide as long, 

 female, somewhat narrower, male; sides curved and narrowing to the 

 front; hind angles scarcely divergent, carinate; disk convex, shining, rather 

 coarsely, not closely punctate. Elytra not wider than thorax, sides grad- 

 ually curved and narrowing to apex, the tips together rounded; surface 

 substriate, finely and densely punctured. Sides of mesosternal cavity 

 strongly convergent behind, not elevated. Length 15-20 mm. 



Starke, Putnam and Lawrence counties; rare. July 4-Au- 

 gust 7. 



XXIX. Orthostethus Lac. 1857. (Gr., " straight breast.") 



This genus is represented in the southern Atlantic States and 

 southern Indiana by the single large species: 



1394 (4278). Orthostethus infuscatus Germ., Zeitschr., V, 1S44, 183. 

 Elongate, strongly attenuate behind the middle. Uniform dark reddish 



or sooty brown, densely clothed with brownish-yellow prostrate hairs. An- 

 tennas with second joint less than half the length of third, the latter shorter 

 and much narrower than fourth. Thorax slightly longer than wide, sub- 

 convex, sides rounded on apical third, straight and parallel on basal two- 

 thirds ; hind angles long, acute, divergent, strongly and obliquely carinate ; 

 surface rather densely and finely punctate. Elytra gradually tapering from 

 base to apex, obsoletely striate, more densely punctate than thorax. Length 

 26-30 mm. 



Lawrence and Crawford counties; scarce. July 2-July 26. 

 Occurs beneath loose bark of old snags, on high wooded hills. A 

 typical example of the Austroriparian fauna of the southern third 

 of the State. 



Subtribe B. (Corymbitini.) 



In this subtribe the hind coxal plates are gradually, sometimes 

 scarcely, widened on the inner side, the hind margin being nearly 

 straight, and often not toothed over the insertion of the thighs. 

 The claws are serrate or pectinate in several of the genera. Of the 

 20 North American genera composing the subtribe 14 are known to 

 be represented in Indiana, while two others perhaps occur. 



