340 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
depressed or somewhat compressed apically, grooved above, 
often shallowly cleft at tip ; the last dorsal segment of the abdo- 
men (anal segment, supra-anal plate) is likewise, in most species, 
extended into an elongate, median process of complicated struc- 
ture, often more or less forked at apex, which meets or embraces 
at its tip the upcurved subgenital plate. 
From their habitat in tall grasses, low shrubs and bushes in 
general, I have ventured to christen them Bush-katydids, in 
contrast to the true or arboreal Katydid whose home is among the 
branches of tall trees. Several species are sufficiently numerous 
to be often seen and frequently heard during the latter part of 
summer and early autumn, though their stridulation is not so 
loud as to force itself on the attention, as does that of the true 
Katydid. Five species and a closely related race or subspecies 
are known from our territory, only one of which is rare. 
The young are quaint little creatures with enormously long 
antennae, green above, daintily varied with fine dusky and red- 
dish spots, white beneath, and move very slowly. They are 
common, and may be readily found in the haunts of the adults, 
clambering deliberately about with gently waving antennae and 
solemn, staring eyes. 
Key to the Species of Scudderia. 
Males.i 
A. Last dorsal segment of abdomen not produced into an elongate median 
process. Subgenital plate not compressed apically. Cerci long, gentlj-- 
incurved Northern Bush-katydid, S. septentrionalis, p. 342. 
AA. Last dorsal segment of abdomen bearing an elongate median pistillate 
process. Subgenital plate more or less compressed apically. Cerci 
short, bent abruptly inward. 
B. Median process truncate at tip with thin, vertical, backward-projecting 
lateral flanges which enclose the sides of the subgenital process. 
Texan Bush-katydid, S. texensis, p. 343. 
BB. Process bifurcate or emarginate at tip, the forks lobed ventrally in side 
view. 
C. Process deeply bifurcate at tip, the opening between the forks much 
too narrow to admit the process of the subgenital plate. 
Fork-tailed Bush-katydid, S. furcata, p. 347. 
CC. Process emarginate, or but slightly bifurcate at tip. 
^ Females of this family of insects may be recognized at once by the presence 
of a compressed, blade-like ovipositor, either straight or up-curved. 
