38 
Psyche 
[June 
the dorsocentral area behind the suture. Lateral elements 
are not clearly discerned. The whole thorax is relatively 
short and high, the height at least equal to the length. 
Legs : The femora are clearly preserved and are stout 
without being swollen. Posterior femur longer than the 
anterior pair and slightly narrowed at the base. Both the 
femora and tibia are densely covered with rather long, 
coarse, finely pointed, flat appressed setae on the dorsal, 
lateral and anterior surfaces. The tibiae similarly covered. 
Bristles are short but stout. The hind femur has 3 
lateral bristles distributed along the middle. The apex 
is not preserved. The middle femur shows 2 or 3 anterior 
bristles, the hind femur bears 1 stout bristle medially 
near the base. Middle femur also with 3 prominent, ven- 
tral bristles distributed along the middle. Hind tibia 
stout and slightly wider toward the apex and of nearly 
the same length as the hind femur. It is comparatively 
well preserved with at least 2 prominent, dorsal bristles, 
1 near the basal third, 1 near the apical fourth and the 
latter bristle with a matching ventrolateral bristle. Hind 
basitarsus stout. The middle tibia densely pilose but 
without bristles showing. The anterior femur shows no 
bristles but the corresponding tibia has 1 very stout, 
posterior, apical bristle, another quite long, arising from 
near the middle, besides, also 2 long, slender, bristly 
hairs on the basal third. Tarsal bristles stout but short. 
Claws sharp, bent chiefly at the apex, black with the 
base lighter colored. Pulvilli well developed. Wings: 
The wings are hyaline with the apical fourth darker, ap- 
parently due to villi. Marginal cell closed with a mod- 
erately long stalk; the second submarginal cell is com- 
paratively narrow, developed almost entirely in front of 
the third vein and at the apex it is only moderately flared. 
The anterior branch of the third vein ends quite at the 
Explanation of Plate 2 
Photograph of Senoprosopis romeri n. sp. (Holotype, Florissant 
shales, Colorado, no. 5125, Museum of Comparative Zoology). Length 
of specimen 25 mm. 
