TWO GENERA OF TRYPETIDAE—MALLOCH 13 
There are many specimens of both sexes in the National Museum 
collection from Torreén and Tlalmalilo, Mexico, and a few from 
California, Colorado, Idaho, New Mexico, and Nevada. 
TRYPANEA VICINA (van der Wulp) 
1890. Urellia vicina VAN DER WULP, Biologia Centrali-Americana, Diptera, vol. 2, 
p. 427, fig. 
Very similar to actinobola in most characters, but the apex of the 
anterior basal cell of the wing is dark brown (fig. 1, g). Struc- 
turally the male differs from that of Loew’s species in having the 
frontal bristles longer and stronger, the ocellar pair attaining to the 
bases of the upper infraorbital pair, and the mid femur with no 
outstanding anteroventral bristles on the apical half. There are 
also usually some microscopic hairs on the underside of the third 
wing vein from base to near the inner cross vein. 
Originally described from two females from Orizaba, Mexico. In 
the National Museum there are a male from Brewster County, Tex., 
one female from Victoria and one from Devils River, Tex., and two 
females from San Francisco, Calif. 
TRYPANEA TEXANA, new species 
Male and female—This species agrees very closely with the de- 
scription of polyclona (Loew), which is unknown to me and not 
included in this paper. It is said by Loew to have two pairs of 
scutellar bristles and must belong with stigmatica and eugenia. The 
present species is very similar to that figured by van der Wulp as 
polyclona in 1890 (p. 427), but in no case in the series before me 
is the anterior one of the two dark rays through the discal cell 
entire. In every specimen this ray is broken before it reaches the 
fifth vein, usually being represented on the vein by a dot; the other 
ray is also usually broken beyond middle of the cell, but in two 
specimens it is entire (fig. 1, 7). 
The male has the frontal bristles short, the ocellars not attaining 
to bases of the upper infraorbitals, and in neither sex are there 
anteroventral bristles on the mid femora. The third wing vein has 
hairs below from base to near the inner cross vein. 
Length, 3 mm. 
Holotype male, Arlington, Tex., June 12, 1907 (Bishop) ; allotype 
and 6 female paratypes, Dallas, Tex., U.S.N.M. No. 54401. 
A female specimen from Las Visayas, Chihuahua, Mexico, differs 
from the above in having the inner ray through the discal cell entire 
and carried along the fifth vein for a short distance but not to the 
bases of the discal cell. It is not occidentalis Adams. 
