NO. 1932. EUCERINE BEES OF NORTH AMERICA— COCEERELL. 273 



* trifasciatella Ashmead, 1900. Kingstown, St. Vincent, West Indies (H. M. Smith). 



Female 8 to 9 mm. 



Type.— Cat. No. 6396, U.S.N.M. 

 trinodis Robertson, 1901. Illinois (Robertson). Tab. 4. 



Maxillary palpi often three-jointed. 

 *tristis CocKERELL, 1904. Mesilla Valley, New Mexico (Cockerell). Tab. 1. 



Paratype.— Cat. No. 3359, U.S.N.M. 

 tristis maMna Cockerell, 1902. Cerro Chilicote, State of Chihuahua, Mexico 

 (Townsend.) 



Male smaller than tristis, eyes dark brown, flagellum dark reddish beneath, nervures 

 mostly piceous. Probably a distinct species. Visits Malvaceae. 



* tuckeri Cockerell, 1909. Piano, Texas, October (E. S. Tucker). 



Resembles perplexa (female), but meso thorax shining, and closely beset with very 

 deep and large punctures. 

 variabilis Robertson, 1905. Near Carlinville, Illinois (Robertson). Tab. 4. 

 vernonensis Viereck, 1905. Vernon, British Columbia (Harvey). Tab. 1. 



Described as a subspecies of M. menuacha. 

 *vernomse Robertson, 1902. Illinois (Robertson). Tab. 4. 

 vemoniana Robertson, 1905. Near Carlinville, Illinois (Robertson). Tab. 4. 

 wheeleri Cockerell, 1906. Fedor, Texas, May 23 (Birkmann). Tab. 2. 



Supposed male; Ann. Mag. Nat. Hist., AprU, 1906, p. 367. 

 wickhami Cockerell, 1906. Fedor, Texas, May 3 (Birkmann). Tab. 2. 

 zanthopteralis Cockerell, 1906. Fedor, Texas, May 26 (Birkmann). 



Wings very yellow. 



Oenus THYQATER Holmberg. 



Type. — (Tetralonia) Thy gater terminata (Smith). 



Maxillary palpi three jointed. Malar space large. 



Macroglossapis Cockerell, type (Macroglossa) Macroglossapis oribazi Radoskowski, 

 is the same genus. This genus, on account of the large malar space and other 

 characters can not well have been derived from the Melissodcs group. 



Thygatina Cockerell is an analogous genus, with three-jointed maxillary palpi, 

 found in Ceylon. (See Trans. Amer. Ent. Soc, vol. 37, p. 237.) 



Tables. 



(1) Cockerell. Trans. Amer. Ent. Soc, vol. 32, 1906, p. 74, 83. 

 *albilabris Cresson, 1878. Mexico (Sumichrast). Tab. 1. 

 analis Lepeletier, 1841. Brazil. Tab. 1. 



According to Friese the Mexican oribazi is the same. 

 *cockerelli Crawford, 1906. San Jose, Costa Rica (Crawford). 



Described from the female. Quirigua, Guatemala (W. P. Cockerell). 



Type.— Cat. No. 10076, U.S.N.M. 

 modesta Smith, 1879. Oaxaca, Mexico. Tab. 1. 



Notes on type. — Trans. Amer. Ent. Soc, vol. 31, p. 327. 

 montezuma Cresson, 1878. Mexico (Sumichrast). Tab. 1. 



* nigra villosa Crawford, 1906. San Jose, Costa Rica (Crawford). 



Described from the male. Quirigua, Guatemala (W. P. Cockerell). 

 Type.— Cat. No. 10077, U.S.N.M. 

 oribazi Radoszkowski, 1884. Mexico. 



Same as analis, according to Friese. Female 16 mm. 

 *rubrlcata Smith, 1879. Oaxaca, Mexico. Tab. 1. 

 Notes on type. — Trans. Amer. Ent. Soc, vol. 31, p. 328. 



Costa Rica form; Trans. Amer. Ent. Soc, vol. 32, p. 159. Specimens in U. S 

 National Museum are Costa Rican form. 

 48702°— ProcN.M.vol.43— 12 18 



