1915] North American Pachygasterine Olt 
and is associated with Abies and Pinus. Perris reared it 
from larve found on Pinus maritimus in the burrows of Tomicus 
and Hylurgus, and gives a full description of the stages, with 
figures,* under the name Pachygaster pini Perris. 
Verrall’s contention that this genus is not a valid one 
because of the possibility of the fork of the third vein becoming 
obsolete in occasional specimens of other species which ought 
to have it present can not be entertained, as the course of the 
veins in Zabrachia precludes the possibility of its ever being 
furcate, and is quite a different case from that of the other 
genera cited. 
Lophoteles Loew.t 
The type species of this genus was described from specimens 
taken on the Polynesian island of Radak. Subsequently 
Williston described a species, pallidipennis, from Atoyac, 
Vera Cruz, Mexico, which he considered congeneric.{ I have 
some doubt as to the generic position of Williston’s species, 
which I have not seen. The description of the antenna is 
not clear enough to permit one’s forming an opinion as to its 
structure, but the fact that the arista is densely plumose is 
demonstrated both in the description and in the figure. A 
copy of Williston’s description is given below. Williston 
was not certain of the sex of his specimen. 
Lophoteles pallidipennis. 
““Female—Head black, covered with whitish dust, with the excep- 
tion of a slender median line and the lowermost portion, which are 
shining. At the vertex the eyes are separated by the ocelli, the front 
gradually widening anteriorly. Antenne black, the first two joints 
yellow; arista densely pubsecent, appearing almost like a solid mass, 
in length equal to about twice that of the first three joints together. 
Thorax deep black, moderately shining, the color mostly conccaled 
beneath silvery tomentum, which is arranged in slender stripes, leaving 
the black color apparent between them. Scutellum subtriangular, the 
middle portion of the margin produced into a thin edge, upon which a 
number of minute points are visible; the basal part uniformly and 
thickly silvery-tomentose, the apical portion opaque black. Abdomen 
black, for the most part concealed beneath a dense silvery tomentum. 
Legs light yellow; all the femora, except their tip, black. Wings 
hyaline, the veins yellow and not at all stout. Length 3% millim.” 
*Ann. Soc. Ent. France, 1870, p. 210. 
{Berl. Ent. Zeitschr., 1858, p. 110. 
tBiol. Centr. Amer., Diptera, Vol. I, 1901, p. 250. 
