TWO GENERA OF TRYPETIDAE—MALLOCH 15 
pair of infraorbitals. The mid femora lack well-developed bristles 
in both sexes, and the third wing vein is almost invariably sparsely 
haired below from its base to near the inner cross vein. 
Originally described from New York and recorded from New 
England. The National Museum collection contains a large number 
of specimens from Orlando, Fla., all with one exception reared from 
larvae mining in @naphthalium obtusifolium. The exception bears 
a label indicating that it was from Chrysopsis microcephala. 'This 
may be an error. 
TRYPANEA JONESI Curran 
1932. Trypanea jonesi CurRAN, Amer. Mus. Nov., No. 556, p. 6, fig. 6. 
Described from female specimens and compared with actinobola, 
from which it was distinguished by the elongate dark mark on the 
fifth wing vein and the more extensively blackened stigma. The 
abdomen is also stated to be more shiny and the head distinctly 
shorter. These characters hold good for the specimens before me, 
and the anterior pair of infraorbital bristles are also longer than in 
Loew’s species. Wing as in fig. 1, wu. 
I have seen no male that I can identify as belonging to this species. 
Originally described from various localities in Oregon and from 
Jackson Lake, Wyo. In the National Museum collection there are 
three females with data as follows: Ormsby County, Nev. (Baker) ; 
National Park, Wyo.; and Pasadena, Calif. (Grinnell). 
TRYPANEA ARIZONENSIS, new species 
Female——Similar to dacetoptera in general features, the thorax and 
abdomen densely gray dusted, the former without a trace of dark 
vittae, and the abdomen but slightly shiny, the antennae and legs 
tawny-yellow. In no specimen is there any trace of anterior bristles 
on the mid femur, and the third wing vein has usually two or more 
widely separated microscopic stiff hairs below between base and the 
inner cross vein. 
Wings markings as in figure 1, v, readily distinguishing it from 
any other in this group, none having two dark fasciae through the 
discal cell that extend beyond the fifth vein. In stigmatica there 
are two similar fasciae, but in that species there is a broad black band 
between the stigma and the inner cross vein, and there are two pairs 
of scutellar bristles, the apical pair much shorter than the basal. 
Length, 3 mm. 
Type and 6 paratypes, Tucson, Ariz., February 25, 1934, lot 429 
(O. Bryant collection). 
