MORSE: ORTIIOPTERA OF NEW ENGLAND. 375 
AAA. Ninth dorsal alKloniinal sopniont with hind margin .smoothly convex. 
B. Su!)gi>nital i)Iatt' tai>eriiin at apex into a i>air of small ui)\vard- and 
outward-curling proccsgfs. Slender; hind femora .'^lender, four times 
as long as wide, armed beneath with very numerous short, appressed 
spinules ^^'oodland Cave-cricket, C. terreslris, p. 380. 
BB. Subgenital plate emarginate posteriorly, bilobate, the lobes broad, 
their hind margins convex. Hind margin of ninth dorsal segment 
broadly parabolic convex, of tenth broadly V-emarginate. Stout: 
hind femora relatively short, with fewer sharp, clo.«ely appressed 
spinules Short-legged Cave-cricket, C. brcnpcs, p. 3S1. 
AAAA. Dorsum of ninth abdominal .'segment extended backward, truncate, 
with rounded corners. Suljgenital plate V-emarginate or bilobate. 
C. Spines of hind tibiae dusky at ba.se. 
D. Stout; two conspicuous longitudinal blackish stripes on sides of 
dorsum; hind femora stout, convex beneath, unarmed or with few 
exceedingly fine denticulations. 
Black-sided Cave-cricket, C. lalens, p. 381. 
DD. Rather slender; usually dull-colored; hind femora only moderately 
stout, their ventral spinules short, weak, widely set, appressed. 
Pale-footed Cave-cricket, C. lapidtcola, p. 382. 
CC. Spines of hind tibiae pale at base. 
E. Spines of hind femora long, stout, erect. Very large. Subgenital 
plate V-emarginate Slender-legged Cave-cricket, C. gracilipes, 
p. 383. 
EE. Spines of hind femora shorter, appressed. Subgenital plate bilo- 
bate from rear Stygian Cave-cricket, C. stygius (prob- 
ably synonjTnous with last-named species), p. 383. 
Conservatory Camel-cricket; Asiatic Camel-cricket. 
Diestrammena marmorata (DeHaan.) 
Fig. 59; Plate 14, figs. 18, 19. 
Rhaphidophorns marmoratus DeHaan, Bijdragen tot de Kermis der Orthoj>- 
tera, p. 217 (1842). 
Diestrammena marmorata Brunner von Wattenwyl, Verh. Zool.-bot. 
Ges. Wien, vol.38, p. 299 (1888).— Lugger, Orth. Minn., p. 254, fig. (1898). 
Diestrammena unicolor Morse, Psyche, vol. 11, p. 80 (1904). 
Head rounded. Vertex with a pair of short, acutely pointed, 
black spines directed forward and downward. Palpi nearly as 
long as body, slender. Antennae extremely deHcate and very 
long, five to six times as long as body. Pronotum convex, trun- 
cate in front, a little produced behind. Legs very slender, front 
and middle femora and tibiae approximately equal, as long or half 
