1920] Lutz and Cockerell, Notes on American Beet 551 



CeiUris (Ptilotopus) atrij>s and/oxt Cockerell, 1906, i)j). 97, 314. DouglaH, 

 Arizona. "Lower Sonoran." 



Centris atripes Cockerell, 1906^1, ]). 72. San Bernardino Ranch, Arizona; 

 VIII; (Snow). 



ntriventria. See atripes. 



atriventris rubripes Friese, 1899, p. 43. cf ; Venezuela. 9 ; Panama 

 and Brazil. 



Centris (Melanocentris) atriventris rubripes Frie-se, 1900, pp. 242, 287. 

 Centris (Ptilotopus) atriventris rubripes Cockerell, 1906, p. 97. 

 See atripes. 



bakerella Friese, 1912a, p. 89. N. n. for Centris (Hemisia) bakeri 

 Friese, 1912, p. 199. d^; Morelos and Guadalajara, Mexico; 

 (Baker). 



bakeri. See bakerella. 



bicolor Lepeletier, 1841, p 163. 9. "Capt. de Goyan," Brazil. 



Friese, 1900, p. 288. 9, cf. Minos Geraes, Espirito Santo, Rio Grande 

 do Sul, Jundiahy and Ypanema, Brazil. French Guiana. 

 Friese, 1916, p. 296. San Jos^, Costa Rica; (Schmidt). 

 See Epicharis. 

 bicoloreUa. See smithii. 



bimaculata Lepeletier, 1841, p. 168. 9 . Sa5 Paulo, Brazil. 



(?) C.fuscata Lepeletier, 1841, p. 167. (f. Sa6 Paulo, Brazil. If this is 

 really the same, it has page-priority. 



Burmeister, 1876, p. 163. Congonhas and Lagoa Santa (Minas Geraes), 

 Brazil. 



C. (Rhodocentris) bimaculata Friese, 1900, pp. 243, 306. Central and 

 South America, "iiberall." 



Schrottky, 1902, p. 323. Nueva Palmira, Uruguay. 



Cockerell, 1919, p. 188. ElRancho, Guatem.\la; I; (Deam). 



birkmanni Friese, 1899, p. 44. cf, 9. Fedor, Texas; IV-VI; (Birk- 

 man). See Birkman, 1899, p. 245. 



Centric (Melanocentris) birkanni Friese, 1900, pp. 242, 296. 

 Centris (Ptilotopus) birkmanni Cockerell, 1906, p. 97. 

 See atripes. 



brevicepa Friese, 1899, p. 44. cf, 9 . Minas Geraes, Amazon, Brazil. 



Centris (Rhodocentris) breviceps Friese, 1900, i)p. 243, 301. Uruguay. 

 Colombia. Peru. Bolivia. Chiriqui, Panama. May be vitttUa Lepeletier, 

 1841, p. 168. 



Cockerell, 1919, p. 190. Rio Mato, Caura district, Venezuela; X; 

 (Carriker). 



csesalpinisB Cockerell, 1897, p. 394. 9 , cf Mesilla Valley, New 

 Mexico; V; at Hoffmanneggia [C(esaipinia] falcaria. 



