98 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



d 1 . Male cerci straight as seen laterally; furcula feebly developed, no longer 

 than the last dorsal segment from which it springs ; hind tibiae uniform red. 



3. nuUcola (p. 102). 



d 2 . Male cerci arcuate as seen laterally ; furcula well developed, crossing fully 

 a third of the supraanal plate ; hind tibiae red with a broad pale basal 



annulus 4. stupefacta (p. 104). 



c 2 . Tegmina faintly overlapping, scarcely if any longer than the pronotum; 

 male cerci slender, many times longer than the middle breadth; subgenital 



plate as seen from behind broadly conical, acute 5. dodgei (p. 105). 



& 2 . Hind border of pronotum broadly rounded or subtruncate, not angulate ; teg- 

 mina at most subattiiigent, generally distinctly separated, no longer or scarcely 

 longer than the pronotum. 



c 1 . Furcula not more than a fourth as long as the supraanal plate; subgenital 

 plate with the lateral and apical margins in the same horizontal plane ; inter- 

 space between mesosternal lobes of male fully or more than half as broad again 

 as long. 

 d 1 . Cerci of male slender, many times longer than the middle breadth; hind 



tibiae pale red 6. ascensor (p. 107). 



d 3 . Cerci of male broad, hardly more than twice as long as the middle breadth ; 



hind tibiae fusco-glaucous 7. marshaUii (p. 108). 



c 2 . Furcula nearly half as long as the supraanal plate ; subgenital plate apically 

 elevated; interspace between mesosternal lobes of male less than half as broad 

 again as long 8. oregonensis (p. 110). 



i. PODISMA GLACIALIS. 

 (Plate VII, Fig. 3.) 



Pezotettix gladalis SCUDDER!, Bost. Journ. Nat. Hist., VII (1863), pp. 630-631, 

 pi. xiv, figs. 9, 10. SMITH, Proc. Portl. Soc. Nat. Hist., I (1868), p. 149. 

 THOMAS, Rep. U. S. Geol. Surv. Terr., V (1873), p. 148. SCUDDER!, Hitchc., 

 Rep. Geol. N. H., I (1874), p. 374, pi. A, figs. 5, 10. STAL, Bih. K. Sv. 

 Vet.-Akad. Handl., V, no. 9 (1878), p. 15. GIRARD, Traits 616m. d'ent., II 

 (1879), p. 246. BRUNER, Rep. U. S. Ent. Couim., Ill (1883), p. 59. RILEY, 

 Stand. Nat. Hist., II (1884), p. 202. FERNALD, Orth. N. E. (1888), p. 29; 

 Ann. Rep. Mass. Agric. Coll., XXV (1888), p. 113. MORSE, Psyche, VII 

 (1894), p. 106. 



Podisma glacialis WALKER, Cat. Salt. Brit. Mus., Snppl., V (1871), p. 72. 



Pezotettix borealis GLOVER, 111. N. A. Ent., Orth. (1872), pi. vi, figs. 16-18. 



Dark olivaceous green above, greenish-yellow beneath in life, often 

 in drying becoming ferruginous, clothed thinly with rather long pile. 

 Head yellowish green with a greenish streak down the middle of the 

 frontal costa, above dark olivaceous green; labiuin, maxillae, tip of 

 labrum, and of clypeus pale bluish white, the palpi yellow with the termi- 

 nal joint apically rimmed with brown, the mandibles black at tip and 

 extreme base; vertex gently tumid, feebly elevated above the prouotum, 

 the interspace between the eyes as broad (male) or twice as broad 

 (female) as the first antennal joint; fastigium moderately declivent, 

 straight, and not arcuate, in the male lying below the upper level of the 

 eye so as to be hidden on a side view, shallowly (male) or very shal- 

 lowly (female) sulcate, broadening anteriorly, especially in the male; 

 frontal costa percurrent or almost percurreut, equal, as broad as (male) 

 or distinctly narrower than (female) the interspace between the eyes, 



