CURCULIONIDES. 287 



This is the Curculio quercus Melsh. Catal. 

 Belongs to the subgenus Copturus Sch. 



2. Z. OPERCULATUS nob. (Cryptorhynchus) Jour. Acad 



Sci. 



3. Z. oculatus nob. {Cryptorhynchus) Jour. Acad. Nat. Sci 



CENTRLNUS Schbnh. 



C. SCUTELLUM album. — Punctured; with scales; scutel whit< 



Inhabits United States. 



Curculio scuteUum album Knoeh, in Melsh. Catal. 



Body black, densely punctured, and with short pale yellowish 

 or whitish scales; head minutely punctured: rostrum long, 

 tured, with a short, impressed line at base : antennae piceous - 

 thorax with dense orbicular punctures covering the who!' 

 face; the tip of the posterior middle white at the scutel : s< 

 white : elytra with deeply impressed striee ; interstitial lines flat, 

 broad, densely punctured: beneath with whitish metallic 

 much more dense than on the superior surface. 



Length over three-twentieths of an inch. 



Var. a. Over one-fifth of an inch, the rostrum is more r< i 

 linear towards the tip. 



Var. c. Elytra with a slight piceous tinge. 



I have taken this insect in Pennsylvania, Indiana and 

 souri. The variety is from Arkansaw. 



CIONUS Clairv. 

 C. scrophularive Auct. My specimen is so much like th< 

 European individuals that it can hardly be considered to vary 

 from them. 



RHYNCHOPIXORUS Hcrbst. 



1. R. pr^potens. — Thorax with three black vittae. 



Inhabits Arkansaw. 



Body black, covered with dense, prostrate, cinereous hairs- 

 rostrum shorter than the head and thorax; thorax with three 

 black vittae, extended behind at the scutel: elytra with doubh 

 series of punctures; a black vitta on the middle of each, and :. 

 narrower subsutural one. 



Length more than three-fifths of an inch. 



This is a fine insect. 



