Art. X.] Hike, Panorpidae of America Nofth of Mexico. 261 
Anterior wing 18-21 mm., body 16-18 mm. Light brown; 
ocelli surrounded by black, eyes black, rostrum and maxillary 
palps black, the pile on the antennae is noticably longer than 
in occidentis, veins of wings prominent, hind femora thickened, 
the outer of the two spines at the end of each hind tibia as 
long as the first tarsal joint. ' 
Male appendages, from side view, oblong, superior edge 
strongly elevated at base, nearly straight to apex, inferior edge 
very gradually approaching the superior, thus making the apex 
slightly narrower than the base; length of the appendages 
about 2 mm. 
Habitat, D. C.; Ill; Kans.; Md.; Mo.; N. Y.; Ohio; Ga. 
Compared with occidentis^ the male appendages are entirely 
different, the pile of the antennae is longer, the veins of the wings 
are more prominent, and the color of the wings is paler. 
In a forme'r paper I separated out a specimen which I 
called mexicarius Klug, principally on account of its larger size. 
After studying more material I am satisfied that it is stig^naierus 
and that the species is variable in size. 
Bittacws piliGornis Westwoord. 
Plate LX, Fig. ly. 
Bittacus pilicornis, Westwood, Trans. Ent. Soc. of Lon. 
4-196; Walker, Cat. 468; Hagen, Neurop. N. A. 246; Hine, 
Jour. Col. Hort. Soc. 1 3-1 13. 
Anterior wing 19-21 mm., length of body 16-18 mm. 
Yellowish; antennae clothed with very long pile, wings yellow- 
ish, veins darker, cross veins bordered with fuscous, pterostigma 
prominent, yellowish brown, legs nearly the same color as the 
wings, hind femora not thickened. 
The appendages of the male, from side view, triangular, 
with the corners rounded. 
Haditat, Can.; D. C.; Md.; Mich.; N. Y. ; Ohio. 
Easily known by the long pile of the antennae. This is 
one of the two American forms without thickened posterior 
femora ; the corresponding tarsal joints are also slender, and 
the wings are broad, with the apices broadly rounded. 
