Ds 
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PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 92 
Apices of submarginal and first posterior cells entirely brownish black, 
the stigma and basal portion of the wing except extreme base yel- 
lowishi (fig: |, 91) io. ao ee conjuncta (Adams) 
Submarginal cell usually with a small hyaline dot or spot below the 
apex of the second vein, and the first posterior cell always with a 
large lunate apical hyaline mark that extends almost entirely across 
TS) tipi- 2 Se ee ee 13 
A broad black band covering almost the entire stigma that is centrally 
broader than the first costal hyaline mark beyond it, and extending 
obliquely inward to cover the inner cross vein (fig. 1, 0), frequently 
no small hyaline spot below the apex of the second vein; mid femur 
with bristles on the anteroventral surface apically__ bisetosa (Coquillett) 
At most a narrow dark streak or ray extending from the stigma to 
the inner (cross -Veln a2. Se eee ee ee ee 14 
Dark ray through the discal cell immediately proximad of the outer 
cross vein continued over the fifth vein to the wing margin (fig. 1, t). 
dacetoptera Phillips 
No dark ray through the apical section of the discal cell extending over 
the (outer sCross. Velnhsse= 25 oe ee ee eee 15 
The slender dark streak or ray from the stigma to the inner cross vein 
entire or almost so, at most slightly paler within the inner edge of 
the stigma, fifth vein usually with a small dark spot near middle of 
the discal cell that is sometimes visible only when the wing is viewed 
from the tip against the light as a darker part of the vein itself 
(fig. 1, #2); frontal bristles short, the ocellargs not attaining the 
bases of the upper infraorbitals; mid femur with distinct anterior 
DPIStlES! OFT ALCAN Ty eh eee dt ee actinobola (Loew) 
Slender dark streak or ray from stigma to inner cross vein more or 
less widely interrupted, or the other characters not as above____:-__ 16 
Mid femur without anterior or anteroventral outstanding bristles_-_____ 17 
Mid femur with one to several rather strong bristles on the apical 
nalf of the ,anteroventral Souicta cen a es eee ee ee 18 
Two dark rays or fasciae through the apical half of the discal cell of 
the wing that extend to or beyond the middle of the cell (fig. 1, r), 
usually a dark spot on the fifth vein below the anterior ray; ocellar 
pair of bristles short, not attaining to the bases of the upper infra- 
OT DIAS as en ne texana, new species 
Only one dark ray or fascia through the apical third of the discal cell 
that extends to or almost to the fifth vein, and sometimes a much 
shorter stump of one in front of it (fig. 1, s), no dark spot on fifth 
vein near middle of the discal cell; ocellar bristles long, attaining 
to bases of upper infraorbital- pairs+_-- <2. aa mevarna (Walker) 
Mid femur with several rather long, strong, yellowish bristles on the 
apical half of the anteroventral surface; ocellar bristles short, not 
attaining to bases of the upper pair of infraorbitals__ actinobola (Loew) 
Mid femur with but one or two dark brown bristles on the apical half 
of the anteroventral surface; ocellar bristles longer and stronger, 
attaining to or almost to the bases of the upper pair of infraorbitals_ 19 
The dark ray almost invisible through the stigma; third wing vein with 
some widely separated short stiff hairs on its underside from base 
to beyond the inner cross vein______--______ microsetulosa, new species 
The dark ray faint but evident through the stigma; third wing vein 
with at most one or two short hairs at extreme base below. 
californica, new species 
