LeContc ] 



RHYJ^CHITID^. 



4. Strise distant not veiy distinct 5 



" composed of large deep punctures 6 



5. Color black bronzed 2. geneus. 



" blue 3. mexicanus. 



6. Beak narrow 4. liirtus. 



" broad, dilated at tip 5. glastinus. 



7. Legs dark colored 8 



Legs yellow, body coppery golden 7. auretis. 



8. Bronzed, frontal fovea deep 8. fossifrons. 



Frontal fovea obsolete 9 



9. Blue bronzed, head strongly punctured 9. cyanellus. 



Coppery, head feebly punctured 10. geratus. 



1. R. bieolor Herbst, Kiifer, vii, 131, tab. 104, f. 6; Oliv., Ins. 81, 23, 

 tab. 2, f. 31, GylL, Sch. Cure, i, 212 ; Attelabus bic. Fabr., Ent. Syst. i, 2, 

 888 ; Syst. El. ii, 422 ; CurcuUo 6ic., Fabr. locis variis. 



An abundant species found on wild roses from the Atlantic to the Pacific 

 coast. The head as far as the eyes, the prothorax and elytra are red in tlie 

 specimens from the eastern part of the continent. I have indicated in my 

 collection the following races : 



a- Head entirely black. Oregon and California. 



i3. Head, stem of antennie and legs red. Colorado. 



y. Red, except the club of the antennas, and sides of metathorax, which 

 are dark. Colorado. 



The beak of the 9 is shorter and stouter than in ^, but I see no other 

 sexual difference. 



2. R. seneus Boh., Bull. Mosc. vi, 22 ; Sch. Cure, i, 21o ; Fahraeus 

 Sch. Cure, v, 323. 



Middle, Southern, and Western States to Colorado. A variety occurs, in 

 whicli the elytra are testaceous. I observe no sexual differences in the 

 specimens before me. 



3. R. mexicanus Gyll , Sch. Cure, i, 237 ; Chevr., Col. Mex. 108. 



I refer to this species one specimen from Arizona, very similar to R. hir- 

 tiis, but of a blue color ; the beak is rather shorter and broader, and slightly 

 dilated at tip ; the two strine towards the base are equally apparent, and the 

 front is similarly channeled. The head and prothorax are somewhat less 

 coarsely punctured, and the elytral strife are more evident, and composed 

 of rather larger punctures. The differences, except in color and form of 

 beak, are not obvious ; the former may be variation, and the latter is, 

 perhaps, sexual. 



4. R. hirtus Oliv., Ent. 81, 26, tab. 2, f. 36; GylL, Sch. Cure, i, 231-, 

 Attelahus hirtus Fabr., Syst. El. ii, 421. 



Carolina to Florida. 



5. R. glastinus Lee, Pacific R.R. Expl. and Surv., Insects, 52. 



San Francisco, California. Remarkably different from our other species 



