ABT. 17 NORTH AMERICAN WEEVILS PIERCE 15 



dead wood of hawthorn {Crataegus sp.), and chestnut {Gastanea 

 sp.). The larva makes its gallery in the sapwood (Bedel, 1885). 

 Also in dry twigs of Garpinus (Schaufuss, 1914, 1027). 



EURYMYCTERINl, NEW tribe 



This tribe is founded on two American genera, EurymycteT Le- 

 Conte and Gonotropis LeConte; with large eyes; flattened beak, 

 narrower at base than head and enlarged apically ; lateral f oveif orm 

 scrobes covered by the lateral margin of the beak; and different 

 sized antennae in the two sexes. 



TABLE OF GENEEA 



Prothoracic ridge strongly angulated and approaching tiie base at the middle; 



claws minutely toothed Gonotropis LeConte. 



Prothoracic ridge straight at the middle, base deeply biemarginate ; claws 



acutely toothed Eurymycter LeConte. 



Genus GONOTROPIS LeConte 



Gonotropis LeConte, Proc. Amer. Philos. Soc, 1876, vol. 15, pp. 393-394, Type, 

 gib'bosus LeConte, monotype. 

 Only one species occurs in the United States. 



GONOTROPIS GIBBOSUS LeConte 



Oonotropis gibTjosus LeConte, Proc. Amer. Philos. Soc, 1876, vol. 15, p. 394. 



Occurs in Colorado. It is represented in the United States 

 National Museum from Marquette, Michigan, June 26-July 29 (Hub- 

 bard and Schwartz) and Dundee, New York, June 13 (Hubbard and 

 Schwarz). 



This species has been described as having simple claws but the 

 accompanying sketch (fig. 36) shows that there is a minute tooth. 



The face is figured in figure 29, side of head in figure 30, under- 

 side of head in figure 31, inner view of maxillae in figure 32. 



The prothorax (figs. 33 and 34) shows more primitive characters 

 than Allandrus or Meconeonus as well as Eurymycter in that prac- 

 tically all of the principal thoracic areas are more or less delineated. 

 The anterior margin has a narrow strip which includes the postocu- 

 lar lobes and corresponds to the pretergite. On the venter viewed 

 from the side there is a constriction near the apex which may be 

 said to limit the presternite. This line is faintly indicated to the 

 dorsum and indicates the praescutal area above. The well-known 

 prebasal ridge is the limiting line for the base and sides of scutellum. 

 The scutem and scutellum are faintly separable by a transverse ele- 

 vation extending toward the terminus of the lateral ridge. From 

 this point on to the lateral ridge the only definite suture of the pro- 



