OF WASHINGTON. 71 



Female. — Entirely similar to the male except that the arolia between 

 the claws are shorter and the color is generally lighter, the latter evi- 

 dently due to discoloration. 



Measurements : Length, pronotum, male, 5-5.25 mm., female, 7 mm. ; 

 elytra, male, 4 mm., female, 4.25 ; posterior femora, male 13. 5-14 

 mm., female, 18 mm. ; antennae, male, 11 mm., female (?). 



Two males, base of Santa Catalina Mountains in Arizona, 

 August 16, 1907 (J. L. Webb), and one female with no data. 



Type. — No. 1041, U. S. National Museum. 



This species differs from B. crassus as described and figured 

 by Scudder* in the less strongly sulcate frontal costa, the in- 

 cised piceous stripe of the lateral lobes of the pronotum, and 

 in the male genitalia, especially in the shape of the cerci. The 

 size will serve for the ready differentiation of this species from 

 Scudder's B. peninsula;, which was described from Lower Cali- 

 fornia without exact locality. 



SOME BEES COLLECTED BY MR. F. C. PRATT IN TEXAS. 

 By T. D. A. COCKERELL. 



Some time ago I received from Mr. F. C. Pratt a small 

 but interesting collection of Texan bees, concerning which the 

 particulars are now given. Several are new to Texas, or 

 otherwise noteworthy. 



Xenoglossa strenua Cresson, and X. patricia Ckll. 



Del Rio, May i, 1907, both from flowers of Cucurbita 

 fostidissimu^. 



Centris caesalpinias Ckll. 



Devil's River, May 3 and 7, 1907, female at flowers of 

 Monarda citriodora. 



Anthophora fedorica Ckll. 



Cotulla, April 17, 1906, male at flowers of Opuntia, female 

 at Lonicera. A. fedorica has hitherto been known from a 

 single male. The female has the hair of thorax above brightly 

 colored, and looks exactly like Emphoropsis birkuianni; but 

 outer side of hind tibiae is clothed with white hair (black in 

 E. birkmanni) , and hair of lower part of pleura is white (black 

 in E. birkmanni) ; the hair of face and cheeks also is light. 



"Rev. Melanopli in Proc. U. S. Nat. Mus., Vol. xx, p. 28, pi. 2, fig. 

 10 (1897). 



