174 
ORTHOPTERA. 
most shanks and feet blood-red, the spines tipped with black; 
wings transparent, faintly tinged with pale green, and netted 
with greenish-brown lines. The abdomen of the male is 
very obtuse and curves upwards at the end, and is furnished, 
on each side of the tip, with a rather large oblong square 
appendage, which has a little projecting angle in the middle 
of the lower side. Length, to tip of the abdomen, from 1 
inch to I 4 ; expands from I 4 inch to 2 inches. 
This and the following species probably belong to the 
subgenus Oxya of Serville. The yellow-striped locust is 
one of our most common insects. It is readily known by its 
color, and by the two yellowish lines on the thorax, extend¬ 
ing, when the insect acquires wings, along the inner margin 
of the wing-covers. It is very troublesome in gardens, 
climbing upon the stems of beans, peas, and flowers, devour¬ 
ing the leaves and petals, and deflling them with its excre¬ 
ment. The young begin to appear in June, and they come 
to their growth and acquire their wings by the first of Au¬ 
gust. When about to moult, like other locusts, they cling 
to the stem of some plant, till the skin bursts and the insect 
withdraws its body and legs from it, and leaves the cast-skin 
still fastened to the plant. 
3. Acrydium femur-ruhi'um}^ Red-legged Locust. (Fig- 80.) 
Grizzled with dirty olive and brown; a black spot extend¬ 
ing from the eyes along the sides 
of the thorax; an oblique yellow 
line on each side of the body be¬ 
neath the wings ; a row of dusky 
brown spots along the middle of 
the win^-covers ; and the hindmost 
shanks and feet blood-red, with black spines. The wings 
western sections of the Union, consists only in the color of the legs and greater 
depth of tint upon the thorax, &c. In the latter, the synonymy stands as follows: 
A. ( Caloptenus) bivittatus, Say = A. ( Coloptenus) femoratus, Burm. = A. Milberti^ 
Serv. = A Jlavo-vittatum. Harris,— Uhler.] 
[ 1 ® This is also a Caloptenus. — Uhler.] 
