ERIEHINUS. 197 



I, Elytra more or less distinctly spotted. 



1, Sides of thorax much rounded. 



A A, Eostrum somewhat striate at base only. 



Brown ; rostrum black ; antennae and legs yellow- 

 brown ; pubescence unequal, gray ; elytra variegated with 

 gray and brown. Eostrum long, thin, moderately curved ; 

 thorax much broader than long, closely punctured, a little 

 narrowed behind, somewhat constricted in front ; femora 

 thick, clubbed, strongly toothed. L. 2 — 2|- 1. Not common. 



E. tremulae, Payk. 



H M, Eostrum with five ridges reaching nearly 

 to apex. 



a a. Thorax gradually dilated from apex to 

 middle, broadest in middle. 



Elongate. Pitch-black ; antennae and legs red-brown ; 

 pubescence scanty, gray ; elytra checkered with red-brown. 

 Eostrum long; thorax short, closely punctured; tooth on 

 femora moderately strong. L. 2\ 1. Scarce ; on Aspens. 



E. costirostris, Gyll. 



b b. Thorax rather suddenly dilated behind 

 apex, broadest before middle. 



Elongate. Pitch-black or brown ; thorax with anterior 

 margin narrowly, and posterior margin broadly paler ; 

 elytra lighter or darker brown, variegated with dark spots ; 

 antennae reddish, with club black ; legs reddish or yellow. 

 L. 2 — 2 1 1. Common ; on Sallows and Willows. 



E. maculatus, Marsh. 



E. Silhermanni, Wenck, is described as being larger and 

 broader than E. costirostris, with a shorter and thicker 

 rostrvim and the spots on the elytra uniform ; from E. 

 ■maculatus it is said to differ in being less convex, generally 

 a little larger, with thorax less closely punctured and femora 

 stronger. 



2» Sides of thorax not, or not much rounded. 



A A, Eostrum not or scarcely longer than 

 thorax. 



a a. Eostrum wrinkled longitudinally ; thorax 

 much broader than long. 



Oblong. Pitch-brown ; antennae and legs brown-red ; 



