HAWK-MOTHS OF THE VICINITY OF NEW YORK CITY 27 
the catalpa trees are sometimes completely defoliated by the 
caterpillars. The species has made its appearance at Lake- 
hurst, New Jersey, and without doubt before long will be found 
in this vicinity. The caterpillars are social and live in large 
colonies, differing in this respect from all other species of Sphin- 
gide. Enters the ground to pupate. 
40. Dolba hyleus. 
Not common in this vicinity. In general appearance it re- 
sembles a miniature Phlegethontius rusticus (No. 27). It is found 
from Canada to Florida and westward to Iowa. The caterpillar 
feeds on the ink-berry (Jlex glabra). Enters the ground to 
pupate. 
41. Lapara coniferarum. 
Very rare in this vicinity. Found from Canada to Florida, 
The caterpillar feeds on pine. Enters the ground to pupate. 
