4 HAWK-MOTHS OF THE VICINITY OF NEW YORK CITY 
caterpillar hatches in from five to seven days after the eggs have 
been deposited. The caterpillars as a rule shed their skins or 
moult five times before reaching maturity. The mature cater- 
pillars are smooth, or sometimes more or less granulated over the 
surface. The last segment is provided with a horn, or marked 
with a tubercle or polished eye-like spot instead. Most of the 
Hawk-Moth caterpillars are marked with seven lateral, oblique 
stripes. After reaching maturity, and when ready to transform, 
they descend from their food-plants to the ground. Most forms 
burrow into the soil, where they construct cells, in which they 
change to pupz, but some species form their pupz on the surface 
of the ground, in a loose, web-like cocoon between leaves. The 
pupze are almost always chestnut brown, elongate, with the 
tongue-case either buried or detached and resembling the handle 
of a pitcher. 
KEY TO THE HAWK-MOTHS. 
Wings partly Cran Sparenin: Se aS Seta Oe erga Group A. 
Wings wholly opaque. . Be Pare en ee ye ts Soler 
With yellow fine on weed o Se eu Ree tap ene Section 1. 
With yellow markings on hind wings.......... re 
With green and pink markings on wings....... Re 
With green markings on wings, without pink... 1G 
With pink markings on wings, without green... ae 
With brown markings, without pink, green or 
Vellowa 15.25.0525 eee ees ce ex ae 
With gray or blackish brown markings, without 
pink, yellow or ‘Geen 2... eee eee oo page 
Group A.—WINGS PARTLY TRANSPARENT. 
Underside of thorax pale yellow without a line on each side. 
Outer border of fore wings toothed within... .Hemarts thysbe. 
Likedhysbe, but dargens® pas sees = een ee var. floridensis. 
Outer border of fore wings not toothed within. . . var. ruficaudis. 
Underside of thorax pale yellow with a red-brown line on each side. 
Outer border of fore wings even within..... Hemarts gracilts. 
