ORTHOPTERA OF NOVA SCOTIA. — PIERS. 287 



interval between mesoslernal lobes distinctly transverse (not longer than broad 

 as in Melanoplus), as broad or nearly as broad as the lobes themselves; wing- 

 covers wanting. 



Colour. — The sexes differ somewhat in colour. Dark olivaceous preen 

 above, greenish-yellow below. Head yellowish-green with greenish streak 

 down face; pronotum j^Uowish-green (male) or dark olivaceous-green (female), 

 the lateral lobes bright greenish-yellow below, with principal sulcus black 

 and ending below in a small black spot; above with a broad blackish postocular 

 band which passes along head and pronotum, expanding backward, and 

 continued as transverse streaks on abdomen. Abdomen of male black above 

 with a series of yellowish-green spots and a triangular spot of same between 

 middle and hind co.xa;; a lateral row of greenish-j^ellow spots on first eight 

 abdominal segments; beneath yellowish-green. Abdomen of female olivaceous- 

 green. Hind femora yellowish grass-green, broadly but very obscurely 

 bifasciate v\-ith olivaceous-green, under surface and lower half of inner surface 

 coral-red, knee black; hind tibiae green, the spines (8-11 in outer series) black. 



Measurements. — Male: body, 16 mm.; antennae, 8.5 mm.; hind femora, 

 9.2 mm. Female: body, 26 mm.; antennae, 9 mm.; hind femora, 12 mm. 



Range. — P. E. Island, Quebec, Sudbury and North Bay in Ont. (variety 

 canadensis, etc.), western Maine, northern New Hamp. at high elevations, 

 summit of Greylock in Mass., Xew York and Penn., usually at high elevations. 

 Canadian Zone. 



Re?narks. — This species has not yet been reported from 

 Nova Scotia by any collector, but it is here inserted hypo- 

 theticall}^ as it is verj^ possible that it may occur here rarely 

 and at a few special localities, as Baj^ard Long on 26 Aug. 

 1912, took a female of the typical race (P. glacialis glacialis) ' 

 in Kings County, Prince Edward Island, at Dundee "east on 

 the Prince Edward Island railway towards Douglas," in 

 a black-spruce swamp (vide E. M. Walker, Can. Ent., 47, 

 p. 341, 1915). It has als3 been collected in western 

 Maine and northern New Hampshire at high elevations. 

 Long's records for Prince Edward Island and St. Fablen 

 (Quebec) are the first for the typical race in Canada, 

 although the race canadensis had been previously reported 

 by Dr. E. M. Walker. 



Podisma is distinctly a boreal type, and its sp.ecies 

 are, so far as heretofore known, confined to high altitudes 

 as well as high latitudes, although the elevation of Dundee 

 in Prince Edward Island is only 108 ft. on the railway. If 

 P. glacialis is in the future found in Nova Scotia, it would 

 most likely be in the more elevated parts, and should be 

 there searched for. Even if met with, it will doubtless be 



