40 
Psyche 
[June 
apex of the wing, the posterior branch ends well behind 
the apex by a distance double the middle width of the 
second submarginal cell. The first, second and third 
posterior cells open maximally. Fourth closed with a 
moderately long stalk and the end vein of the fourth 
posterior cell outwardly convex. Also the upper vein of 
this cell also strongly convex, tending to occlude the diseal 
cell. Anterior cross vein oblique, entering the discal cell 
a little beyond the middle. Posterior crossvein absent, 
upper anterior intercalary vein twice as long as the medial 
crossvein. Anal vein closed and stalked. Abdomen: The 
abdomen is elongate, considerably longer than the wing. 
It is well preserved and shows 7 tergites and 8 sternites. 
Apparently a female, the third to seventh tergites are of 
nearly equal length and while there is clear preservation 
of slender, postmarginal fringes of long, bristly hairs, 
rather widely separated, there is no evidence of distinct 
bristles. The sternites show clearly and are well preserved 
and their pile appears to have been extremely delicate. 
At only one point is there an indication of a sternal hair 
and certainly bristles were absent. 
Type. Female; Miocene, Florissant, Colorado, no. 5125 
in the Museum of Comparative Zoology. Named in honor 
of Director A. S. Romer. 
This species is very close to the species Senoprosopis 
antiquus James, the wing of which was figured by James, 
1939. It differs from it in the more extensive narrowing 
in the middle of the first posterior cell, which in S. romeri 
is clearly narrowed to less than half its maximal width, 
and also in the more straightened apical portion of the 
third vein. 
I have examined the types of all Recent New World 
species placed in Senoprosopis Macquart ; all differ to some 
extent from the clear profile drawing of the head shown 
by Macquart, of his type of genus, Senoprosopis diardii 
Explanation of Plate 3 
Photograph of Pseudosphegina carpenteri n. sp. (Holotype, Baltic 
amber, no. 5124, Museum of Comparative Zoology). Length of specimen 
5.6 mm. 
