568 Bulletin American Museum of Natural History [Vol, XLIi 



zexmenisB Cockcroll, 1912c, p. 447. 9. Quirigua, (Guatemala; at 

 Z(.rtn(im'a virgulatn; (W. P. Cockorell). Oives this nametoJ^xo- 

 mnlopsis pulchella C'ockwell, 19126, p. 29. 



Cockerell, 1917a, p. 191. Point Isabel, Texas; IV; (W. P. Cockerell). 



See Tetrapedia. 

 See Centris. 

 See Centris. 

 See Centris. 

 See Centri.s. 

 See Centris. 

 See Centris 



Fiorentinia 



Hemisia 

 Heterocentris 

 Melanocentris 

 Poecilocentris 



Ptilotopus 

 Rhodocentris 



Tetrapedia Klug, 1810, p. 33 

 (Tjrpe: Tetrapedia diversipes Klug) 

 P'riese, 1899a, pp. 247-304, gives a summary of previous work. 

 ^pe?c/iam' Radoszkowski, 1884, p. 18 (mexicanus). 

 Fiorentinia Dalla Torre, 1896, p. 334. New name for Epeicharis 

 Radoszkowsky. 



abdominalis Crcsson, 1878a, p. 182. 9, cf. Mexico; (Sumichrast). 

 albilabris Friose, 1916, p. 335. cf . San Jos6, Costa Rica; (Schmidt), 

 albipes I^iese, 1916, p. 334. cf, 9 . San Mateo, Costa Rica; (Burg- 



(lorf). Popayan and Cali Cauca, Colombia. 

 amplipennis. See lugubris. 

 antennata Friese, 1 899a, p. 297. 9 , cf . Orizaba and Cordoba, Mexico ; 



(Siiussuro). 

 apicalis Crosson, 1878, p. 136. 9. Mexico; (Sumichrast). 



Friese, 1899a, p. 289. ()riza])a, Mexico. 

 atripes Smith, 1854, p. 366. 9. Mexico; (F.Smith). 



Friese, 1899a, p. .302. Suggests it may be Cresaon's masta. (See Chale- 

 pogenns.) 



