264 ORTHOPTERA OF NOVA SCOTIA. — PIERS. 



legs; face oblique and usually meeting vertex at an acute 

 angle; median carina of pronotum never raised as a crest or 

 cut by more than one tran verse linear groove; wings never 

 brightly coloured or with dark band. — The winter is passed 

 in the egg state, oviposition taking place in early autumn. 

 Stridulation is produced by rubbing the hind femora against 

 the roughened intercalary vein of the wing-covers, when at 

 rest. Despite the similarity of the name of this subfamily 

 with that of the Acrydiince, beginners must be careful to 

 distinguish between the two names. 



Key to Nova Scotian Genera of Acridin^ (TRYXALiNie). 

 a. Antennae linear; lateral foveolse (small depressions) of vertex small and 



7iot visible from above Orphulella, p. 264. 



aa. Antennae linear; foveolae of vertex plainly visible from above as linear 

 depressions between the eyes and the apex. 



b. Median carina of pronotum not high, and 7iot cut in front of middle 

 by principal sulcus (transverse groove), the notch so formed being 



a little behind the middle Chorthippus, p. 266. 



bb. Median carina of pronotum rather high and sharp, and plainly 



c^^t somewhat in front of middle by principal sulcus 



Mecostethus, p. 260. 

 Group Orphulse. 



6. ? Orphulella speciosa (Scudder). 



Orphulella speciosa. Scudder, Can. Ent., xxxi, p. 184 



(July 1899); "Halifax, N. S., Piers." 



Description.— Fa.ce very oblique; vertex blunt, I'ounded, obtuse in 

 female, right-angled in male; central depression close to ayiex; foveolce indistinc! 

 and not visible from above; lateral carina? of pronotum very little incurved, the 

 distaiice between them little greater at hind margin than at front; principal 

 sulcus cuts median carina of pronotum somewhat behind middle; wing-covers 

 usually reach ends of hind femora although varying from 3 mm. short to 

 3 mm. beyond them in male, and from 1.5 mm. short to 2 mm. beyond in 

 female 



Colour. — Very variable, the more striking variations being (a) head, 

 disk of pronotum and wing-covers green (b) head and disk of pronotum green, 

 tegmina rose-red ; (c) head and pronotum brown, wing-coveis rose-red, and (d) 

 head, pronotum, and wing-covers brown. A dark line from behind the eye 

 reaches back onto the pronotum, along the lateral carina;, the latter being 

 whitish. Wing-covers with a few small spots, sometimes wanting; hind 

 femora greenisli or brownish, not banded; hind tibia; dull brown or j-ellowish, 

 without pale ring near base. 



Measurements. — Male: body, 13-14 mm.; antennsB, 4.5-6.5 mm.; 

 wing-covers, 10-13 mm.; hind femora, 8.5-10 mm. Female: body, 16-21 

 mm.; antenna^, 5-().5 mm.; wing-covers, 9-16 mm.; hind femora, 10-12 mm. 



Range. — Eastern and central North America: from Nova Scotia (??) 

 (Scudder, probably an erroneous record), Maine, St. Anne dc Bellevuo, 

 P. Q. (Gooderham MS.), and southern Ont., south to Texas, and west to 

 Minn, and Nebr. Very abundant in Now Eng. 



