lieConte.] 



PHYTON^OMTNl. 131 



they are dirt colored on the general surface of the body, but pale at the 

 sides of the prothorax and elytra, and on a narrow dorsal vitta of the for- 

 mer. Beak as long as the prothorax, distinctly carinate and sulcate, pro- 

 thorax scarcely as wide as long, broadly rounded on the sides, gradually 

 narrowed in front of the middle, marked as usual with scattered black dots. 

 Scutellum pale. Elytra strongly emarginate at base, humeri oblique; strise 

 strongly punctured, interspaces wide, somewhat convex; posterior callus 

 rather prominent, oblong, fading in front into the fifth and adjoining inter- 

 spaces. Beneath dirty brown speckled with black punctures. Length 9- 

 10,5 mm. ; .35-. 42 inch. 



(^. Last ventral segment not impressed, anal segment very slightly visi- 

 ble behind the last ventral. 



$ . First and second ventrals with a broad shallow impression, last ven- 

 tral with a deep round excavation extending from the base to the tip ; 

 pygidium semi-circularly emarginate at tip ; elytra separately subacumi- 

 nate at tip. 



New Yoi'k to Georgia. The posterior callus of the elytra is about as 



prominent as in L. sqiuimiger, but not so narrow. 



t 



6. L. insequalipennis (Boh.), Sch. Cure, vi, 189, (Listroderes). 



(^. Ventral segments first and second broadly concave at the middle, 

 fifth not impi-essed, anal segment convex and protuberant behind the last 

 ventral ; elytra conjointly rounded at tip. 



9- Last ventral with two strongly elevated folds at tip, converging an- 

 teriorly but not meeting, leaving between them a deep excavation ; pygid- 

 ium somewhat pointed at tip ; elytra separately prolonged at tip into a long 

 straight pointed process. 



Middle and Southern States. Closely allied to the next, but easily dis- 

 tinguished by the sexual characters and by the elytra being but slightly 

 emarginate at base, with rounded humeri, as in L. squamiger. Length 7- 

 11 mm. ; .275-. 43 inch. 



7. L. caudatus (Say), Jour. Ac. Nat. Sc. Phila. iii, 311 ; ed. Lee. ii, 

 174, {Bhynclmnua); Gyll., Sch. Cure, ii, 278 {Listroderes). 



(^. Last ventral segment not impressed, anal segment slightly visible 

 behind the last ventral, elytra rounded at tip. 



9 . Last ventral broadly but feebly concave towards the tip ; pygidium 

 not pointed at tip ; elytra separately prolonged into apical processes which 

 converge at tip. 



Western States. 



8. L. americanus, n. sp. 



Blackish, covered with round dirty -brown scales, becoming larger on the 

 prothorax, less dense and hair-like upon the head and beak. Beak as long 

 as the prothorax, strongly carinate and sulcate. Prothorax scarcelj'' as long 

 as wide, rounded on the sides, narrowed before the middle, constricted to- 

 wards the tip ; marked with two sinuous lateral vitta3, and a scarcely dis- 

 tinct dorsal line of pale scales. The punctures are less conceale.d by scales 



