ART. 5 GENERIC REVISION OF THE FOSSORIAL WASPS PARKER 51 



The flagellum is black, lighter below, especially at the base, and 

 is but slightly carinate on segments 6-12, due to the presence of 

 shallow longitudinal pits. The pubescence is conspicuous, white, and 

 longest on frons, sides of thorax, propodeum, and base of legs. The 

 legs are of normal form and the apical segment of the tarsi of the 

 middle and posterior legs bears a small black maculation above, 

 limited to the posterior half of the surface. The wings are hyaline. 

 The second sternite bears a prominent median process. The genitalia 

 resemble those of dwplicafa. 



A single male paratype differs from the type in having the mark- 

 ings on the sternites less extensive, in having two instead of three 

 yellow spots on the mesopleura, and in having a black spot below on 

 the third pair of tibiae. 



Length 16 mm. Described from two males, type and paratype, 

 from San Luis Potosi, Mexico. 



Type. — In the collection of Massachusetts Agricultural College, 

 Amherst, Mass. 



STENIOLIA DUPLICATA Provancher 



Figures 7, 8 



Sfeiiiolia dupUcata Provancher, Add. Faun. Canada, Hym., 1888, p. 414. — 

 Parker, Proc. U. S. Nat. Mus., vol. 52, 1917, p. 10. 



Steniolia scolopacca IIandlirsch. Sitz. Akad. Wi.-^sensch. Wien, Math. -Nat. CI., 

 vol. 98, 1889, p. 510.— Dalla Torre, Cat. Hym., vol. 8, 1897, p. 501.— Hand- 

 LiRSCH, Sitz. Akad. Wissensch. Wien, Math.-Nat. CI., vol. 104, 1895, p. 965. 



Steniolia meridionalis C. L. Fox, Proc. Calif. Acad. Sci., vol. 12, 1923, p. 430. 



This appears to be the most widely distributed and certainly, with 

 regard to the number of individuals, the most abundant species of the 

 genus. It presents an unusually wide variation in the development of 

 the maculations and also considerable variation in the shade of yellow 

 present. Although the fundamental pattern shown by the macula- 

 tions remains almost constant, it is diificult to find any two speci- 

 mens on which the maculations are exactly alike I have examined 

 the type of C. L. Fox's meridionalis and in my judgment it is only a 

 color variation of this species. 



SPECIMENS EXAMINED 



Arizona: Williams (July, Barber and Schwartz). 



California: Coalinga, Fresno County (June 3, 1907, J. C. Bradley); Diablo 

 Range, Fresno County (June 2, 1907, J. C. Bradley) ; Jacumba Springs 

 (July 29, 1911, W. D. Pierce) ; Los Angeles County; Yosemite (July 20, 

 1905, J. McFarland). 



Colorado: Arboles (C. F. Baker) ; Boulder (August 25, S. A. Rohwer). 



Idaho: Lewiston (C. L. Fox). 



Lower California : San Jose Del Cabo. 



