vo.n24. HKtlsroy or THE MELANOPLl—SCrhDER, 97 



The ejirly nse of the term Podismn previous to IHrtli and sitter ISiit) 

 (otlier than i^iveii above) also siinieieiitly (roiithins the appnipriateiioss 

 of restorin;:^ I'otiUma for tin* .s|HH;ies fiow "jfeneraliy iiielmled in Pezottttix; 

 lor Fischer de Waldiieirn' in 1.S40 used it for six species, of which tho 

 lirst three iielonj^ to /%:otrtti.v of modern writers, th« next two to 

 ClirijsnrhnioH, whiU' the hist is not re<'o«;nizabh'; von liorck in 1848' 

 refers to it pedvxtris and f'riffithi; and finally 11. Fischer himself first 

 used it in 1849' tor /r iff id a. His reasons later ' for snpplanting Podinma 

 l»y Pezotcttix can not be defended. 



The type of Vodinimi is therefore OryUuK pfdvRtrh Tiinnaeus. 



This ij^enus is more widely extended than any (Kherof the Melano]>li, 

 hcin;; the only one not confined to America. It is a <listinctly boreal 

 t> i>e and encin'les the jiiobe. The species are lar;;ely confined to high 

 altitudes as well as hi«^h latitudes, a number beinj;- ali)ine or subalpine in 

 tiieir respective localities. In this country tlie specii's are known from 

 two widely separated re<;ions; In the west, the Rocky Mountain region 

 from Alberta to northern New Mexico; and in the east from western 

 Ontario and New York to Maine. In Europe they are largely confined 

 to the mountains of southern ICurope from the Pyrenees to Mount Par- 

 nassus or to Scandinavia: in Asia their distribution is less known, 

 luit species occur in eastern Siberia and in .lajian. 



In the following pages I have fully described only the American 

 species, w^hich are first treated se|»arately; but I have thought well to 

 (•oini>lete the account of the Melano[)U by imduding the Old World 

 species as far as possible, figuring their abdominal appeiulages, giving 

 a separate table for their determination, and adding brief diagnoses of 

 two species which are unpublished. Their synonomy and distribution 

 are mostly compiled from Bruimers Prodronius Eur. Orthopteren. 



ANALYTICAL KEY TO THK AMKRICAX SPKriES OK POIHSMA. 



A . Tegmina wantinfi;; upper valvrs of ovipositor elon<rate, straight, only faintly 

 falciform a]>ically ; liiud border of prouotuni triinrate or feebly eniarginat*'. 

 /''. Hind femora almost nnifomil y gn-en ; furcnla of male ext«'nding over the su- 

 praaual plate by twice the length of the last dorsal segment; cerci relativ dy 

 stout, in the middle distinctly more than half as broad as the base. 



1. gf/rtcirt/*«(p. 98). 

 /'-'. Hind femora conspicuously fasciate with fuscous: furcula of male extending 

 over the supraanal plate by not more than the length of the last dorsal segment; 

 cerci V ry slender, in the middle distinctly less than half as broad as tlie base. 



2. rarhgata (p. 101). 

 A-. Tegmina present, abbreviate; upper valves of ovipositor distinctly falciform 

 ai>ically. 

 h'-. Hind border of pronotura distinctly angulate; tegmina overlapping, generally 

 distinctly longer than the ]trojiotum. 

 c\ Tegmina distinctly overlapping, nnich longer than the pronotum; nuile cerci 

 short and broad, hardly if at all more tl:au twice as long as the middle breadth ; 

 subi;enital nlate as seen from behind more or less broadlv truncate. 



' Orth. Russ., pp.249-253. ='15 .lahrc'sb. Mannh. ver. nat., p. 38. 



•Skan<l. riitv. ins. nat. hist., pp. 87-92, M)rth, Kur., p. :365, note. 



Proc. N. M. vol. XX 7 



