MORSE: ORTHOPTERA OF NEW ENGLAND. 375 
AAA. Ninth dorsal abdominal segment with hind margin smoothly convex. 
B. Subgenital plate tapering at apex into a pair of small upward- and 
outward-curling processes. Slender; hind femora slender, four times 
as long as wide, armed beneath with very numerous short, appressed 
spinules Woodland Cave-cricket, C. terrestris, 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, closely appressed 
spinules Short-legged Cave-cricket, C. breripes, p. 381. 
AAAA. Dorsum of ninth abdominal segment extended backward, truncate, 
with rounded corners. Subgenital 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. latens, 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. lapidicola, 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 synonymous with last-named species), p. 383. 
Conservatory Camel-cricket; Asiatic Camel-cricket. 
Diestrammena marmorata (DeHaan.) 
Fig. 59; Plate 14, figs. 18, 19. 
Bhaphidophorus marmoratus DeHaan, Bijdragen tot de Keimis der Orthop- 
tera, p. 217 (1842). 
Diestrammena marmmata Brunner von Wattenwtl, 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 delicate 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 
