42 PROCEEDINGS OF THE NATIOlsrAL MUSEUM. vol.64. 



October 12, Barstow (J. C. Crawford) ; female, July 1-2, 1916, 

 Marathon; 3 females, June 13-17, 1908, Brewster (Mitchell and 

 Cushman) ; female, June 6, 1908, Marfa (Mitchell and Cushman) ; 

 3 females, July 3-6, Marfa (Wickham) ; female, July 11, 1907, Vic- 

 toria (W. W. Yothers) ; 2 females, 8 males, June 22, 1917, Eich- 

 mond. Fort Bend County; 4 females, July 11, 1917, El Paso, El Paso 

 County; 2 females, June 24, 1917, Wharton; male, June 28-30, 

 Alpine (Wickham) ; male. May, 1907, Lee County; male, November 

 26, 1905, Cotulla (F. C. Pratt). Wyoming: Female, Douglas (L. 

 Bruner) ; female, July, 1895, 40 miles north of Lusk. 



I consider montivaga Cresson the female of propinqim Cresson 

 for the following reasons: The geographical ranges of the two are 

 identical ; both are found in the outlying portions of this area, that 

 is, Texas, New Mexico, Arizona, North Dakota, Montana, and 

 Alberta, Canada; in the case of North Dakota, Montana, and Al- 

 berta, Canada montivaga and propinqua are the only two Pseudo- 

 methocas which are present in collection^, excepting hequaeHi 

 Mickel, and it belongs to another section of the genus. Fox (1899) 

 suggested that montivaga was perhaps the female of propinqua and 

 from the large series of specimens at hand this seems to be perfectly 

 evident. 



This species is very closely related to sanhornii Blake and from 

 the distribution data at hand it seems to replace sanhornii throughout 

 the area of its range. 



Both the female and the male are quite variable, although in the 

 case of the female, not so much so as former writers have indicated. 

 The color of the female varies from ferruginous to dark mahogany 

 red; the apex of the first tergite may have the pubescence black or 

 golden, while that of the second may be black or silvery. I have 

 examined the type of inontivaga Cresson and find that it has the 

 apex of the first tergite with golden pubescence and the apex of the 

 second tergite with silvery pubescence. There is apparently no 

 structural character that will serve to separate the variants. Two 

 males from West Point, Nebraska, have the thorax and the first 

 two abdominal segments almost entirely ferruginous. A male from 

 Lee County, Texas, one from Meade County, Kansas, and one from 

 Cotulla, Texas, have the thorax entirely black. The genitalia of all 

 the specimens in the entire series are identical and the variants are 

 therefore retained here. 



36. PSEUDOMETHOCA BRAZORIA (Blake). 



1871. Mutilla (Sphaerophthalma) brazoria Blake, Trans. Amer. Ent. Soc, 



vol. 3, p. 255, female. 

 1886. Sphaerophthalmia hrazoria Blake, Trans. Amer. Ent. Soc, vol. 13, 



p. 254, female. 



