194 RHYNCHOPHORA — CURCULIONIDAE. 



Mecimis, 



A, Thorax without white central longitudinal line ; tibiae 

 black. 

 «. Eostrum somewhat long and thin, much curved. 



Black, rather shiny ; with scanty gray pubescence. 

 Thorax very closely punctured; elytra with punctured 

 striae, interstices punctured somewhat in rows ; femora 

 with a small sharp tooth. Eostrum of female longer than 

 that of male and impunctate at apex. L. 1^ 1. Common. 



M. Pi/raster, Herbst. 



6. Eostrum short, robust, nearly straight, punctured. 



Black, rather shiny ; with scanty gTay pubescence ; pos- 

 terior margin of thorax and sides of breast closely covered 

 with yellowish scales. Thorax rounded, very closely punc- 

 tured ; elytra with not very deep punctured striae, inter- 

 stices indistinctly punctured; femora almost Avithout tooth. 

 L. 1^ 1. Scarce. 31. collaris, Germ. 



J5. Thorax with white central line; tibiae red-brown. 



Brown, rather dull ; antennae, tibiae and tarsi red- 

 brown ; sides and suture of elytra usually reddish ; with 

 gray pubescence ; forehead, sides and central line of thorax 

 and sides of elytra closely covered with whitish puljescence. 

 Thorax not very closely punctured ; elytra with punctured 

 striae, interstices punctured somewhat in rows; femora not 

 toothed. L. 1^ 1. Not common. M. circulatus, Marsh. 



Erirhinus. 



A, Femora not toothed. 



a. Hinder pairs of tibiae straight, with a small tooth at 

 apex. 



J. Elytra pitch-brown or blackish. 



1. Eostrum with longitudinal striae. 



Black, dull ; antennae and legs pitch-brown ; witli close 

 brown pubescence ; sides of metasternum with white scales; 

 each elytron generally with a whitish spot behind middle. 

 Eostrum longer than head and thorax, curved ; thorax 

 closely punctured in wrinkles, with an indistinct central 

 ridge, sides moderately rounded ; elytra more than half as 

 long again as together broad, with indistinct striae (deeper 



