322 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
B. Hind femora with a prominent, sub-apical, ventro-posterior spine. 
Cerci with basal internal tooth low, rounded. Eighth abdominal dorsum 
but half as long as seventh, which is longer than the ninth (PI. 13, fig. 22) 
Northern Walking-stick Diapheromera femorata, p. 322. 
BB. Hind femora without prominent sub-apical spine beneath. Cerci with 
basal internal tooth slender, sub-cylindrical, blunt at tip. Eighth 
abdominal segment two-thirds as long as seventh, which is equalled by 
the ninth. . . .Blatchley's Walking-stick, Manomera blatchleyi, p. 326. 
AA. Cerci in dorsal view straight (PI. 13, figs. 16, 20). Valves of ovipositor 
(two pairs of styHform processes) projecting backward from ventral side 
of seventh and eighth segments Females. 
C. Cerci short, less than hah as long as ninth dorsum, bluntly tipped. 
Seventh segment equal to or a little longer than the ninth, about twice 
as long as the eighth (PI. 13, figs. 20, 21). Lower pair of valves of ovi- 
positor about reaching end of ninth segment (PI. 13, fig. 21). 
Northern Walking-stick, Diapheromera femorata, p. 322. 
CC. Cerci long and acutely pointed, two-thirds or more as long as the ninth 
segment. Eighth segment nearly as long as the seventh ; ninth longest 
of the three (PI. 13, figs. 16, 17). Valves of the ovipositor short, 
extending only one-third the length of the ninth segment (PI. 13, fig. 17). 
Blatchley's Walking-stick, Manomera blatchleyi, p. 326. 
NoKTHERN Walking-stick; Thick-thighed Walking-stick. 
Diapheromera femorata (Say). 
Fig. 43; Plate 13, fig. 19-22. 
Spectrum femoratum Say, Journ. Acad. Nat. Sci. PhUa., ser. 1, vol. 4, p. 297 
(1825). 
Diapheromera femorata Harris, Treatise, 3d ed., p. 146, fig. 67, cf (1862) 
(referred to Bacunculus by Uhler in footnote). — Scudder, in Hitchcock's 
Geol. N. H., vol. 1, p. 379 (1874).— Smith, Rept. Ct. Bd. Agric. for 
1872, p. 378 (1873).— Fern ALD, Orth. N. E., p. 133 (p. 49 of sep.) 
(1888).— Walden, Bull. Geol. Nat. Hist. Surv. Ct., no. 16, p. 62, pi. 7, 
fig. 7, 9 (1911). 
Body cylindrical, extremely long and slender. Antennae one- 
half to two-thirds as long as body, very slender. Legs long and 
slender, aUke in form and size, the middle and hind femora spined 
beneath near the end, the spines larger in the male, in which, also, 
the middle femora are enlarged. Cerci one-segmented, of male 
cylindrical, incurved, bearing a low, blunt, basal inner tooth; of 
female short, fusiform (PI. 13, fig. 20-22). 
Body of male smooth, shining; of female dull or waxen. Color 
usually green or brow^n, sometimes unicolor, sometimes partly 
