THE CLICK BEETLES. 



778 



XLIV. Perothops Erich's, 1842. (Or., " to pierce + face.") 



To this genus belong two medium-sized, oblong, robust species 

 having the first joint of antenna? elongate, conical, second one-third 

 as long, third twice the length of second and one-half longer than 

 fourth. One of the two occurs in Indiana. 



1474 (4538). Perothops mucida Gyll., Schon. Syn. Ins., 1827, 133. 



Oblong, parallel. Piceous, male; reddish-brown, female; feebly shin- 

 ing; sparsely clothed with very fine grayish pubescence. Thorax short, 

 wider than long, narrower in front, sides feebly curved, male, more strongly, 

 female, slightly sinuate in front of hind angles, which are short, subacute, 

 feebly diverging, not carinate; disk very finely punctate, with sparse and 

 coarser punctures intermixed, a feebly impressed median line on basal half. 

 Elytra striate, the striie indistinctly punctate ; intervals flat and equal, male, 

 or alternately slightly narrower and more convex, female, finely punctu- 

 late. Length 11-18 mm. 



Monroe, Posey and Crawford counties; scarce. May 12- June 

 11. Occurs on the trunks and branches of old beech trees. 



Subfamily IV. CEROPHYTINAE. 



While no member of this subfamily has been taken in Indiana, 

 it is doubtless represented in the southern third of the State by a 

 rare species, Cerophytum pulsator Hald., a single specimen of which 

 was taken by Dury near Cincinnati. It is an oblong black beetle, 

 7.5-8.5 mm. in length, with the hind coxal plates wholly wanting ; 

 tarsal claws pectinate on basal half; antennae pectinate in male, ser- 

 rate in female ; elytra deeply striate^ the striT coarsely and closely 

 punctate. 



Family XXXVIII. THROSCID^. 

 The Pseldo Click Beetles. 



This family contains only a few small oblong black or brownish 

 beetles which resemble the Elaterids, and the next family, the Bu- 

 prestids, in form and in having the prosternum prolonged behind 

 into a spine which fits into a cavity in the mesosternum. They 

 differ from the Elateridae in having the pro- and mesosterna firmly 

 joined, thus preventing the power of leaping possessed by most click 

 beetles. From the Buprestida? they are distinguished by having the 

 ventral abdominal segments all tree. The adult beetles are found 

 on flowers, while the habits of the larvae are as yet almost unknown. 



In addition to the characters above mentioned, the Throscids 

 have the antennae ll-jointed, inserted on the front, and in repose 



