1929 ] 
A New Pseudomasaris from California 
69 
most of the propodeum (sometimes with two or three black 
spots, rarely extensively black in the concavity) ; very broad 
apical margins to tergites one to five, variously marked with 
black as noted below; most of the sternites; and the legs 
(except for spots on the coxse and occasional spots or 
streaks at the base of some or of all the femora) . In an ex- 
treme yellow example, the dorsal surface of the abdomen is 
almost wholly yellow, only the bases of the tergites being 
black and emitting black projections into the yellow; on 
the first and second tergites these projections are median 
only; on the third, fourth and fifth there are three black 
notches, one in the middle and one on each side ; on the sixth 
a black median line connects the base with the apex of the 
tergite. In the extreme black specimens, the apical margins 
are slightly narrower and in addition to the black notches 
there is a transverse black spot in the yellow on each side 
of the first three tergites ; these spots may be free or con- 
nected with the lateral notches; sometimes they are barely 
indicated or present on the first tergite only. 
Male, holotype, and female, allotype, in the Museum of 
Comparative Zoology, at Cambridge. Paratypes of both 
sexes will be deposited at the United States National Mu- 
seum, the American Museum of Natural History, the 
Philadelphia Academy of Natural Sciences, the California 
Academy of Sciences, and the British Museum. 
California: Seven males (including the holotype) and 
fifty-four females (including the allotype), from Palm 
Springs, Riverside Co., collected by Professor W. M. Wheeler 
at flowers of Yerba Santa, Eriodictyon tomentosum Ben- 
tham, in April 1928. 
Although the eyes of the male are much more bulging 
than is customary in the subgenus Pseudomasaris, proper, 
with the posterior ocelli almost touching the eyes which are 
only separated by three times the diameter of a posterior 
ocellus, it is impossible to include P. wheeleri in the sub- 
genus Holopticus, since the upper orbits are still far re- 
moved from the occipital margin. Moreover, the new species 
is very closely allied to P. occidentalis (Cresson), as shown 
