15 
of the head, two each side of the thoracic, one each side of the abdom- 
inal segments, and two at the end of the body, all of them arising 
from a small tubercle. The rostrum is stout and reaches nearly to 
the posterior coxe. The antenne are rather short and stout, barely 
reaching to the mesothorax; each of the two basal joints bears a long 
and stout bristle; the third joint is slightly curved inward and of 
almost equal thickness or slightly clavate with the apex, which bears 
two or three small bristles, bluntly rounded; its surface is faintly 
annulated or sealy; there are from one to three minute sensorial 
thumbs near its apex. The legs are stout and rather long; the digi- 
tules are simple, or faintly thickened toward the end, the lower pair 
of which is wanting. 
Second generation, second stage.—The larvee in the second stage are 
about twice as large as in the first and more elongated, with the 
antenne longer and stouter; the third joint is slightly tapering and 
without any traces of annulation; the rostrum reaches only the median 
cox. In general appearance and coloration they are identical with 
the young larve. 
Second generation, third stage.—In the third or semipupa stage they 
are 0.7 to 0.8" in length and considerably stouter than before and 
of a purplish-green, with the head and rudimentary wing pads of a 
dirty greenish-white, eyes brown, and the antenne and legs whitish 
or faintly dusky. The future wing pads are now represented by 
rather prominent, rounded swellings. The antenne are still longer 
and stouter than in the previous stage; the third joint is straight and 
somewhat tapering and the sensorial thumbs minute. The rostrum 
reaches nearly to the median coxee. Frontof head somewhat concave. 
Second generation, pupa or fourth stage.—The fully developed pupa 
varies between | and 1.4"™" in length. They are of a dark purplish 
color, with the eyes dark brown and the antenne, legs, and wing pads 
whitish. Front of head straight or sightly convex. The rostrum is 
short and stout, and reaches but slightly beyond the anterior coxe, 
Antenne and legs similar to those in previous stages, though propor- 
tionately longer. The third antennal joint is very long and stout, 
slightly tapering and slightly curved, and bears from one to three 
minute sensorial thumbs. All of the pup, if not rubbed, are fur- 
nished at each side of the abdomen with a dense brush of a white and 
hair-like secretion. 
Second generation, migratory or fifth stage.—The mature migrants 
vary somewhat in coloration; they are generally of a dark purplish, 
purplish-brown, or black color, though frequently purplish-red or dark 
greenish-brown, with antennie, thoracic lobes, and legs black. The 
wings are colorless or faintly dusky, the costal cell and stigma brown- 
ish, and the veins black. They measure from 1.2 to 1.6" in length 
and have an expanse of wingsof4to5™". The wings are carried flat in 
repose. Antennz three-jointed, rather short and slender. The two 
