180 PR CEEDING S OF THE NA TIO NA L M USE UH. VOL xx. 



short appressed subconical, very blunt, erect (female), but sometimes it 

 is very blunt and decidedly appressed in tbe male, also it is occasionally 

 distinctly transverse, but it usually snows a distinct taper, generally 

 from base to tip; interspace between mesosternal lobes varying from 

 quadrate to half as long again as broad (male) or from quadrate to 

 slightly longer than broad (female). Tegmina usually surpassing con- 

 siderably the hind femora, occasionally and especially in the female only 

 a little, slender, feebly tapering, brownish fuscous, nearly always flecked 

 lightly with fuscous throughout the discoidal area; wings rather broad, 

 hyaline, the veins mostly testaceous, growing increasingly fuscous 

 toward the margins, the apex sometimes most faintly, scarcely percepti- 

 bly, iufumate. Thoracic episterua mostly flavo-testaceous in contrast to 

 the fuscous surroundings. Fore and middle femora of male somewhat 

 tumid; hind femora luteo- or flavo-testaceous, obscurely broadly and 

 obliquely bifasciate with fuscous besides the fuscous base, the inner sur- 

 face mostly flavous, more or less clouded with fuscous, the lower surface 

 externally flushed with roseate, the geriiculation mostly fuscous; hind 

 tibiae normally rather bright red, often feebly pallescent at base, with a 

 faint fuscous patellar spot, but not infrequently pale red or pale green 

 or pale yellow, or even dark blue, the spines black beyond the base, 

 nine to twelve in number in the outer series. Extremity of male abdo- 

 men a-little clavate, a little recurved, the supraanal plate triangular 

 or hastate, feebly compressed just beyond the middle, the lateral mar- 

 gins before that a little elevated, the tip acutaugulate, the median 

 sulcus moderately deep, evanescent apically, its bounding ridges rather 

 high and followed apically by a pair of more distant longitudinal ridges 

 of less importance; furcula consisting of a pair of more or less diver- 

 gent, slight, slender, acuminate spines, less than a third, sometimes 

 only a fourth, the length of the supraanal plate; cerci generally about 

 twice as long as broad, sometimes less than that, rarely exceeding it, 

 composed of a basal, nearly equal, feebly tumid piece, and a strongly 

 compressed, slightly upturned and somewhat inbent apical portion, 

 narrowed by the oblique excision of the inferior margin, the apex well 

 rounded; subgenital plate subpyrainidal, with the apical margin a little 

 but rather abruptly elevated, thickened and mesially notched with 

 greater or less, generally considerable, distinctness, the notch followed 

 by a posterior sulcation to some distance. 



Length of body, male, 21.5 mm., female, 24 mm.; antennae, male, 10 

 mm., female, 7.5 mm.; tegmina, male and female, 20 mm.; hind femora, 

 male, 12.5 mm., female, 12.75 mm. 



Three hundred and eighty-seven males, 408 females. Halifax, Nova 

 Scotia, H. Piers; Ottawa, Canada (U.S.N.M. Riley collection): Maine, 

 Packard; Moosehead Lake, Maine; Bar Harbor, Mount Desert Island, 

 Maine (S. Henshaw); White Mountains, New Hampshire, from valleys 

 through forests to highest summits of Mount Washington, Mount 

 Madison, Mount Lafayette Scudder, Henshaw, Packard, Slmrtleft', 

 Morse, Mrs. Slosson (S. H. Scudder; Museum Comparative Zoology, 



