V. SAPYGA,. 43 
in abundance; in the year 1833 I took several on Hampstead 
Heath, among which were two females, with which sex 
Vander Linden was not acquainted. In the nervures of 
the wings it is exceedingly variable, as is shown above. I 
possess all those varieties myself, and others may doubt- 
lessly exist. 
Famity II. 
SAPYGIDA. Leach. 
The feet of both sexes slender, little or not at all spinose 
nor strongly ciliated; their antenne at least as long as the 
head and thorax together and increasing towards their ex- 
tremity, or clavate. 
Genus V. Sapyca. Lat. 
Heap a little wider than the thorax, subrotound; eyes deeply 
emarginate ; the stemmata placed anteriorly on the vertex; 
antenne as long as the head and thorax combined, subclavate, 
slightly excurved at the apex in the ¢, straight in the 9, in- 
serted in a cavity at the base of the clypeus with an elevated 
ridge between them, first joint very long,—the second very 
small,—the rest from the third, which is nearly as long as the 
first, decreasing regularly in length ; labrum minute, scarcely 
apparent; mandibles strong, generally tridentate. THorax sub- 
cylindrical, anteriorly truncate, obtuse posteriorly ; the collar 
extending laterally to the tegulze ;_scutellum small, transverse; 
superior mings with one marginal cell which passes beyond the 
third submarginal and is acuminate, and four submarginal cells, 
the second the smallest and receiving the first recurrent nervure, 
—the third recewing the second, and the fourth apical. Legs 
moderate, slender ; the tarsi long. AnpDoMEN elongate, ellipsoid, 
subsessile. 
+47 The etymology of the name of this genus is uncer- 
tain, as is the case with the majority of Latreille’s names. 
He established the genus in his “ Précis,” in 1796, to place 
