1929 ] 
A New Pseudomasaris from California 
65 
depression which is divided by a low, blunt, longitudinal 
ridge starting behind the postscutellum and not reaching the 
abdominal articulation; lateral angle produced into a 
straight, broadly triangular, blunt, flattened tooth, directed 
posteriorly ; the tooth continuous with the lateral ridge but 
set off rather sharply from the inferior ridge. Abdomen 
much elongate, of the shape usual in males of Pseudomasa- 
ris; the second, third and fourth tergites strongly con- 
stricted and depressed at the base. Armature of seventh 
tergite much as in P. occidentalis, but the preapical pair of 
tubercles longer and more finger-shaped, with a sharp carina 
at the base dorsally (in some specimens this carina is slight- 
ly more raised basad, behind a transverse depression of the 
tergite, on the spot where the fifth or sixth tubercle is 
situated in P. vespoides) ; the tubercles of the apical pair 
are also narrower than in P. occidentalis and are separated 
by a slight median projection of the hind margin. Second 
sternite slightly raised anteriorly, where there is a median 
notch separating two low tubercles (much less pronounced 
than in P. occidentalis and not continued posteriorly into 
blunt, oblique ridges as in that species). Process of third 
sternite in profile rather low and broad; its truncate sum- 
mit forming an almost equilateral triangle, with a broad, 
shallow depression; its anterior angles bluntly rounded, 
without teeth; its posterior angle forming a short, but 
rather sharp tooth directed posteriorly (in general shape the 
process is more like that of P. vespoides than like that of P. 
occidentalis) . Legs long and stout. Front femur and tibia 
slightly flattened beneath, their surfaces regular; the tibia 
slightly swollen ; all the segments of the front tarsus ciliate 
along the outer margin. Middle femur regular, slightly flat- 
tened beneath where the posterior margin shows a faint in- 
dication of a notch before the base; middle tibia in front 
view strongly widened on the inferior edge, the dilatation 
semi-elliptical in outline, broadly rounded off, placed about 
the middle of the length of the tibia, slightly flattened on 
the inner side. Hind femur and tibia regular; the tibia grad- 
ually and moderately widened toward the apical half ; hind 
basitarsus regular, slender, straight, not appreciably flat- 
tened. Middle tibia with one apical spur ; larger spur of hind 
