1864.] 
547 
cence; eyes pale brown; ocelli white, the basal joints of the antennae 
dotted with brown; palpi spotted with brown, the apex of the terminal 
joint fuscous. Thorax densely covered with brownish-yellow hair, the 
lateral, anterior and posterior margins pale, the edge of the two latter 
sometimes pointed with brown. Tegmina barely reaching the tip of 
the antepenultimate segment, having the apex triangular upon the ex¬ 
terior flap and rounded upon the interior one, the nervures with a tinge 
of ferruginous-yellow, occasionally marked with brown, the longitudinal 
nervure of the anterior margin 9 very stout, parallel, with very few 
cross-nervules, those of the disk very irregular, and not very promi¬ 
nent, the lateral bounding nervure white, the lateral flaps broad, em¬ 
bracing the abdomen in its whole depth at base. Tergum closely 
sprinkled with reddish-brown, and spotted with fuscous at sides and 
towards the apex; venter yellow, sometimes spotted with brown; ovi¬ 
positor with a narrow brown line extending along its length, the tip 
piceous. Legs hairy, dotted with brown, the apices of the tarsal joints 
fuscous, spines of the posterior tibiae about 10 in number, shining yel¬ 
low, and fuscous at tip, the apex of the posterior femora dusky. 
Length to tip of abdomen 10 millims. Ovipositor 8 millims. Pos¬ 
terior femur 8 millims. Posterior tibia 8^ millims. 
It inhabits Grrape vines and dense shrubbery near Baltimore, and is 
found fully developed about the middle of September. The descrip¬ 
tion is taken from specimens of several months standing; the living 
insect is brighter and lighter in its coloring. The male is very scarce, 
only a single specimen has occurred to me in several years collecting. 
GEYLLUS, Linn. 
G. personatus. 
Pale yellow, form of G. neglectus^ Scudder. Head minutely sha- 
greened above, yellow, with some vestiges about the antennae and a 
short transverse band between the eyes, black, the cranial surface is 
covered by a large black spot, which is incised anteriorly, each side of 
the middle, and above each eye, immediately below the middle ocellus 
the surface is indented, forming a short transverse impression; eyes 
black, surrounded with a narrow yellow edge; cheeks prominent; tips 
of the mandibles piceous; basal joints of the antennae more or-less 
brownish. Thorax black upon the dorsal surface, the sides yellow, 
with a blackish spot above the middle, the very narrow elevated sub- 
