1929 ] 
A New Pseudomasaris from California 
71 
The true distinguishing features between the two genera 
are, however, correctly given by Bradley in his synoptic 
table of the genera (1922, Op. cit.,\ p. 389). 
Additional Records of Pseudomasaris 
The following records extend the known range of the 
genus and of some of the species. Some of the specimens 
belong to the collections of the Museum of Comparative 
Zoology at Cambridge (M. C. Z.). 
1. P. vespoides (Cresson). — Arizona: Grand Canyon. 
1 $ (G. P. Engelhardt). Colorado: Cripple Creek Rd. (Cor- 
ley Mt. Highway), Teller Co., 8,930 ft., at flowers of Pents- 
temon glaber Pursh, 3 $ and 1 $ , July 1, 1928 ( J. Bequaert) 
the females disappear entirely within the flowers ; the males, 
however, were flying very swiftly from flower to flower in 
search of the females ; it was noted that the smaller Pents- 
temon confertus Douglas, although much more abundant in 
that particular spot, did not attract any masarid. Plainview, 
Jefferson Co., 8 9 and 1 $ , July 9 to 14, 1922 (G. P. En- 
gelhardt). Boulder, 1 9 (M. C. Z.). Platte Canyon, 1 9 (M. 
C. Z.). Hall’s Valley, 2$, August. Utah: Eureka, 1$ (T. 
Spalding) (M.C.Z.). California: Lakeside, 1$ (E. P. Van 
Duzee) (M. C. Z.). Tallac, Eldorado Co., 6,000 ft., 1 9 (W. 
M. Giffard) (M. C. Z.). 
2. P. texanus (Cresson). — Texas: Waco, 2 9 (M. C. Z.). 
3. P. zonalis (Cresson). — Colorado: Plainview, Jeffer- 
son Co., 4 9 and 1 $ , July 9 to 14, 1922 (G. P. Engelhardt) . 
California : Alta Mesa, 1 9 . Washington : Skagit Valley, 
1$ (M. C. Z.). British Columbia: Princeton, 1,800 ft., 
1 $ (M. C. Z.). 
4. P. edwardsii (Cresson). — Utah: Logan, 1 $ (E. S. 
G. Titus) (M. C. Z.). California: Alpine, San Diego Co., 
1$ (E. P. Van Duzee) (M. C. Z.). Palm Springs, River- 
side, Co., 8 9 , at flowers of Phacelia sp., April 1928 (W. M. 
Wheeler) . 
5. P. marginalis (Cresson). — Colorado: Granite Peaks 
Camp on the Pine River, near Bayfield, La Plata Co., 9,000 
