130 RHYNCHOPHORA — CURCULIONIDAE. 



togetlier broad, tubercles before apex feeble. L. 1 — 1| 1. 

 Common. C. assimilis, Payk. 



B B. Elytra blue. 



Black, with some bronze reflection ; elytra blue. Thorax 

 with anterior margin strongly raised and with a central 

 furrow (deeper in front and behind), and a small tubercle 

 on each side; elytra much broader than thorax, with strong 

 punctured striae; interstices flat, very finely wrinkled, with 

 rows of very fine, whitish recumbent hairs, tubercles before 

 apex pointed. L. | — 11. Common. C. erysimi,'FQb. 



2, Thorax strongly punctured. 



Black, shiny ; elytra often -with bluish or greenisli 

 reflection ; under-side very closely, upper-side very scantily 

 covered with grayish scales. Thorax narrowed and con- 

 stricted before apex, with a more or less distinct central 

 furrow and a feeble tubercle on each side ; elytra with deep 

 punctured striae, interstices wrinkled, with a row of fine 

 grayish hairlike scales, tubercles before apex pointed. 

 L. ^ — f 1. Common. C. contractus, Marsh. 



II, Interstices of elytra without tubercles before 

 apex. 



1, Legs black. 



A A, Antennae black ; thorax with a tubercle 

 on each side. 



a a. Elytra without white spot at base of 

 suture. 



Black; upper-side scantily covered with white bristles, 

 under-side with whitish scales. Eostrum scarcely as long 

 as head and thorax, curved; thorax narrower than in C. 

 contractus, more deeply and widely constricted before apex, 

 closely punctured, with a very feeble tubercle on each side ; 

 elytra with deep punctured striae, interstices only slightly 

 convex, almost smooth. L. f 1. Scarce. C. setosus, Boh. 



b h. Elytra with a spot of white scales at base 

 of suture. 



Black ; upper-side with scanty gray pubescence ; base of 

 suture of elytra and the breast thickly covered with white 

 scales. Thorax deeply but not closely punctured, with an 

 indistinct central furrow and a blunt tubercle on each side, 

 base bisinuate; elytra rounded at shoulders, with deep 



