MORSE: ORTHOPTER.\ OF NEW ENGL.\ND. 471 
prozone scarcely cristate, on metazone low but cristate anterioriy, 
fading out posterioriy; in profile sinuous on |)rozone, arcuate on 
metazone, the notch somewhat obHciuc, open. Lateral carinae 
distinct on metazone, indicated on prozone anteriorly; sulci 
rather deeply impressed. Tegmina broad, and passing the hind 
femora by one-fourth or one-third their lengtli. Hind femora 
stout. 
Color: brownish to blackish fuscous in spots and bands on an 
ash-gray ground. Tegmina and hind femora more or less fasciate. 
Hind tibiae fuscous at base, followed by a white ring, coral red 
distally, the spines black-tipped. The pronotum often shows 
an ash-gray X-mark. Disk of wings sulphur yellow, bounded by 
a broad black band reaching the anal angle and sending off near 
the anterior margin a broad short shoot half-way to base, the 
apical margin of the band nearly straight. Apical third of wing 
transparent, the apex either clear or infuscated. 
Measurements. 
Total Body Tegmina Hind femora Antenna 
Male 27-32.5 20-24 21.5-25..5 11..5-14 12-14.5 
Female 32-39 28-34 25 -31 14 -17 12-14 mm. 
The Ledge Locust finds Ufe most to its taste in unsettled, 
somewhat wooded districts of a rocky, often elevated character. 
Here it may be seen during the latter half of the season crawling 
actively about on the lichened ledges, the tints of which its own 
colors exactly match, or flying from one to another, rattling loudly 
as it goes. 
In life it is one of the handsomest of our New England Locusts 
and even cabinet specimens recall the cool gray of the rocks, the 
yellow glory of the goldenrod, and the reddened stems of trailing 
vines among its haunts. So well do its colors match those of its 
background — the pale greenish gray and ashy of the paler rock 
constituents and their lichen covering, the brown and black of the 
darker hornblende and mica and fragments of lichens, that it is 
nearly invisible when at rest. 
Save for the hind tibiae, its coloring is exactly Uke that of the 
Snapping or Broad-winged Locust (Circoiettix verruculatus) 
and its habitat is the same. The two species overlap slightly in 
distribution, but as a whole their ranges in New England supple- 
