254 PROCEEDINGS OF THE NATIONAL MUSEl !/. vol.40. 



MEGACHILE ALBITARSIS Cresson. 



Chicato, Texas, September 6, 1904, two males (F. C. Bishopp); 

 Ladonia, Texas, May 25, at flowers of Rudbeckia, sp. (F. C. Bishopp). 



MEGACHILE SAYI HETERODONTA Cockerell. 



Cresson says of M. sayi, "legs brown-ferruginous or black," and 

 adds, "the male specimens from Texas have the legs, except coxae, 

 entirely brown-ferruginous." The red-legged form may therefore 

 be regarded as the type, and Texas the type-locality. A female 

 from Illinois, received from Professor Robertson, is red-legged. 

 M. heterodonta Cockerell is black-legged, but certainly represents 

 nothing more than a race of M. sayi. 



MEGACHILE SAYI PALUDICOLA, new subspecies. 



Female. — Unusually large, about 16 to 18 mm. long; legs black or 

 dark reddish; wings dark throughout, though darker in the costal 

 region; ventral scopa light yellowish, black on last segment. 



Habitat. — Hearne, Texas, July 23, 1906, nesting in bogs, twelve 

 females (F. C. Bishopp). 



The ventral scopa of sayi and heterodonta is creamy-white, that of 

 paludicola decidedly yellow. 



Type.— Cat. No. 13539, U.S.N.M. 



MEGACHILE COMATA Cresson. 



Seven males; Kerrville, Texas, three at Salvia pitcheri, four at 

 Marrubium vulgare, April 10 to 12, 1907 (F. C. Pratt). 



MEGACHILE PRUINA Smith. 



Texan males bear the following data: Kerrville, at flowers of Mar- 

 rubium vulgare, April 12, 1907 (F. C. Pratt); Kerrville, at flowers of 

 Tetragonotheca ludoviciana, April 12, 1907 (F. C. Pratt); Kerrville, at 

 flowers of Tetraneuris linearifolia, April 11, 1907 (F. C. Pratt); Kerr- 

 ville, at Verbena, April 11, 1907 (F. C. Pratt); Dallas, at Helianthus, 

 September 30, 1906 (R. A. Cushman); Devils River, at Gaillardia 

 pulchella, May 3, 1907 (F. C. Pratt). 



CROCISA DECORA Smith. 



Trong, Lower Siam, January-February, 1899 (W. L. Abbott). In 

 the Entomologist, August, 1910, I recorded this species from several 

 tropical localities, but suggested a possibility that the true decora, 

 from north China, might be distinct. Mr. G. Meade-Waldo has now 

 compared the species recorded by me with Smith's type, and kindly 

 reports that they agree in all essential points. He returns to me a 

 Singapore specimen as a reliable exponent of decora. The Siamese 



