330 PROCEEDIXa^ OF THE NATIONAL MUSEUM. vol. 37. 



EUGNAMPTUS PUNCTICEPS LeConte. 



Washington, District of Columbia, June (Hubbard and Schwarz); 

 Arizona (Morrison). 



EUGNAMPTUS NIGRIVENTRIS Schaeffer. 



Chiricahua Mountains, Arizona, June; Santa Rita Mountains, 

 Arizona, May (Hubbard and Schwarz); Huachuca Mountains, Ari- 

 zona, July (Schaeffer). 



EUGNAMPTUS SULCIFRONS Gyllenhal. 



Alexandria, Virginia, July (Palmer); Jacksonville, Florida; Oak 

 Grove, Alabama, June (Hubbard and Schwarz) ; Meridian, Mississippi, 

 June (Soltau); Texas (Belfrage); Onaga, Kansas, June (Crevecoeur). 



Genus RHYNCHITES Herbst. 



KEY TO SPECIES OK RHYNCHITES. 



Pubescent species. 



Pubescence coarse, white, prostrate; thorax black, elytra violet coppery, 



velatus LeConte. 

 Pubescence short. 



Black, prothorax red, elytral intervals very finely punctured, 



palmii Schaeffer. 



Entirely red above bicolor Fabricius. 



Pubescence long, erect. 



Beak bistriate and carinate at base. 

 Striae distant, not very distinct. 



Color black bronzed; pubescence long xneus Boheman. 



Color blue ; pubescence long mexicanus Gyllenhal. 



Color golden, tinged with green; pubescence not so long, 



eximius LeConte. 

 Striae composed of large deep punctures. 



Elytral intervals serially punctulate; beak narrow; color bluish- 

 black hirtus Fabricius. 



Elytral intervals not serially punctulate; beak much longer; pro- 



notal punctuation denser; color greenish naso Casey. 



Beak flattened, not carinate at base; color green planifrons LeConte. 



Pubescence very fine, inconspicuous and decumbent, or absent. 



Legs yellow or reddish ; body coppery golden aureus LeConte. 



Legs dark colored . 



Bronzed ; frontal fovea deep .fossifrons LeConte. 



(This may have been an extreme variation. Rh. seratoides sometimes 

 displays a frontal fovea, and may possibly be a synonym of this 

 species). 

 Frontal fovea usually obsolete. 



Blue bronzed; head strongly punctured cyanellus LeConte. 



jEneus or coppery; head more or less feebly punctured. 



First three ventral segments of male with median impressed line; 

 elytra very feebly depressed behind base; beak medianly sul- 

 cate; color greenish-aeneus xratoides Fall. 



