56() Btdldin American Museum of Natural History (Vol. XLIl 



Centria (Melanocentria) sericea Friese, 1900, pp. 242, 271. 

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



sixniliima Smith, 1874, p. 370. 9 . Santo Domingo. 



Centris (Rhodocentris) simUlima Friese, 1900, pp. 243, 316. 

 Centris (Trarhina) simillimn Cockerell, 1906, p. 98. 



simplex. See lahrosa simplex. 



smithii Cresson, 1879, p. 229. N. n. for Centris apicalis Smith (not 

 Giidrin), 1874, p. 367. 9 . St. Bartholomew. C. smithii Friese, 

 1899, p. 43, is a homonym = hicoIorella. Cockerell, 1904, p. 235, = (?) 

 chilemvs Spinola. 



Centris apicalis Ashmead, 1900, pp. 209, 300. St. Vincent. 

 Centris (Cyanocentris) apicalis Friese, 1900, pp. 243, 327. Venezuela. 

 Chiriqui, Panama. St. Thomas. Hayti. 



Centris (Hemisia) smithii Cockerell, 1906, p. 98. 



subhyalina Fox, 1899, p. 96. 9 . Texas. "May subsequently prove 

 to be the female of C. lanosa Cress." 



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



tabanifortnis. See hmmorrhoidalis. 



tarsata Smith, 1874, p. 371. cT. Santarem, Brazil, 



Centris {Rhodocentris) tarsata Friese, 1900, pp. 243*, 313. Suggests that it is 

 a variety of lanipes. 



Centris (Rhodocentris) tarsata Schrottky, 1902, p. 324. .Mendoza, Argen- 

 tina. Banda Oriental, Uruguay. 



W. P. Cockerell, 1912, p. 279. Gualan, Guatemala; at Iresine paniculata. 



Cockerell, 1913fl, p. 192. Quirigua, Guatemala; (W. P. Cockerell). 



See lanipes. 



testacea Lepeletier, 1841, p. 165. 9 . Habitat unknown. 



Smith, 1874, p. 365. Santo Do.mingo. 



Centris (Rhodocentris) testacea Frie.se, 1900, pp. 243, 310. Port au Prince, 

 Hayti. 



Centris (Trachina) testacea Cockerell, 1906, p. 98. 



thoracica. See domingensis. 



totonaca Cresson, 1899, p. 213. 9 . Mexico; (Sumichrast). 



Centris (Rhodocentris) totomica Friese, 1900, pp. 243, 313. 



Centris (Trachina) totonaca Cockerell, 1906, pp. 73, 98. 



W. P. Cockerell, 1912. p. 281. Gualan, Guatemala. 



transversa P^rez, 1905, p. 39. 9, cf. T^huacan, Mexico; (Diguet). 



Du Buysson (in litt.) considers this to be nitida Smith. 

 tricolor. See lanipes. 

 trigonoides. See lanipes. 

 varia Erichson, 1848, p. 591. (Hemisia) 9 . British Guiana. 



