512 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
is as broad as the base of the cerci, concave above, and thickened. 
Furcula reduced to tiny tubercles or absent. Valves of ovipositor 
dull, little recurved at tip, and the lower lacking the tooth at 
base. 
Color: grayish olivaceous above, mottled with darker, the 
hind femora conspicuously banded with black and grayish white; 
beneath greenish gray anteriorly, yellowish posteriorly, inner and 
under sides of hind femora bright cherry red. Lateral stripe of 
thorax much broken up. Hind tibiae deep red to gray, with 
black spines, conspicuously pale-ringed near base, and somewhat 
darkened above and below this pale ring. 
Measurements. 
Total 
Body Tegmina 
Hind femora 
Antenna 
Male 
20..5-25 
19-20.5 14 -16.8 
10 -11 
11 -13 
Female 
... 21.5-29 
23-29 14.5-21.6 
11.3-12.7 
10.5-12 mm. 
The Pine-tree Locust, though widely distributed in the United 
States and not uncommon locally, is rare in collections, owing, no 
doubt, to its habits, which are more arboreal than those of our 
other species. Coniferous trees, especially pines, are its favorite 
haunts. In groves of these it may be found either on the ground 
or on the trunks and branches. Of course, it may occur in very 
different surroundings. My first specimen was captured in a 
greenhouse, and I have taken others in open, grassy fields. It is a 
sluggish insect, and a late-comer as well, adults appearing in late 
July or August, and it is found through September and October. 
I have but once had the good fortune to find it in numbers. 
Then, the discovery of a populous colony in a pine grove within a 
few miles of Boston gave me an opportunity to study the species 
advantageously and secure a series of specimens. One reason for 
its abundance seems to have been that the grove mentioned had 
furnished for some time (several years at least) an ample supply 
of suitable "ground" for the eggs, and this, owing to the pecu- 
liar habit of oviposition, is probably quite as essential to the 
development of a populous colony as abundance of food. 
It is a sluggish insect, crawling rather than leaping, relying 
largely upon its protective coloration to escape notice, and it may 
usually be picked up by hand before taking alarm. At first glance 
one might be led to take exception to the statement that its colora- 
