334 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
unnoticed save in a few instances because their attacks are 
confined almost entirely to uncultivated plants or those of little 
commercial value. An exception exists in the case of cran- 
berries, considerable quantities of which are sometimes destroyed 
by Bush-katydids (Scudderia) in the process of getting at the seeds, 
of which they are very fond. 
Their life history is typical for the majority of the order : the 
winter is passed in the egg stage, hatching takes place in the 
spring, growth is rapid, maturity is reached in midsummer, and 
oviposition in early autumn closes the cycle. Probably in cer- 
tain cases (e.g., Cave-crickets) some individuals live over winter. 
The egg-laying habits are of special interest. In most 
instances the eggs are laid on or within vegetable tissue, but 
the exact method varies with the species, ranging from simple 
attachment to the surface of a leaf or twig by a sticky secretion, 
to the saw-like slitting of the leaves of the oak, or the thrusting 
of a long ovipositor down between the stem and leaf-sheath of 
grasses or among the scales of the pine-cone willow-gall, and 
the emplacement of the eggs in the security thus afforded. 
The characters most useful in discriminating the genera and 
species are those drawn from the form of the vertex of the head, 
pronotum, and prosternum, the form and venation of the teg- 
mina, the armature of the legs, and the genitalia, the relative 
value of the different parts varying much in different groups. 
Fortunately for the student of the New England species of this 
family the various genera (with the exception of the Ceuthophili) 
have been critically studied recently and an excellent series of 
articles published thereon, illustrated with plates of diagnostic 
details of structure. A list of them is given below. For in- 
formation concerning their songs see the list of papers under 
Stridulation. 
Amhlyarrypha Rehn and Hebard, Trans. Amer. Ent. Soc, vol. 40, p. 271- 
314, pis. (1914).— Hancock, Ent. News, vol. 27, p. 70-82 (1916). (Pink 
katydids.) 
Atlanticus Rehn and Hebard, Trans. Amer. Ent. Soc, vol. 42, p. 33-100, 3 
pis. (1916). 
Ceuthophilus Scudder, Proc. Amer. Acad. Arts and Sci., vol. 30, p. 17-113 
(1894).— Walker, E. M., Can. Ent., vols. 36, 37 (1905, 1906), pi. 
{Ceuthophilus spp. — one drawing incorrect). — Caudell, Proc. U. S. Nat. 
Mus., vol. 49, p. 655-690, figs. (1916); Diestrammena also. 
