ORTHOPTERA OF NOVA SCOTIA. — PIERS. 289 



bb. Cerci of male with apex more or less expanded, so as to be broader 

 beyond middle, the tip spatulate or sub-spatulate or forked. 



f. Size large (male length more than 25 mm.); cerci of male 

 with apical half much enlarged, but never distinctly forked; 

 furcula of male small; pronotum with light-coloured 

 (yellow) lateral stripes along margin of disk and continued 

 along wing-covers; hind tibisE red (yellowish in extra- 

 imital typical hivittalus). . .19. bivittatus (femoratus), p. 303. 



ff. Size small (male length less than 20 mm.); cerci of male 

 always forked. 



g. Forks of cerci not very pronounced, the lower fork 

 merely an angle or median process; furcula short slen- 

 der spines. (Not yet reported from N. S.) 



[minor, footnote p. 307.] 



gg. Forks of cerci nearly equally distinct and very pro- 

 nounced; furcula minute triangular lobes. (Not yet 

 reported from N. S.j [luridus, footnote p. 307.] 



aa. Wing-covers much shorter than abdomen. 



h. Wing-covers covering two-thirds or more of abdomen, lanceolate, 

 the inner edges overlapping; cerci of male slightly expanded at 

 apex, the middle little narrower than base; furcula minute. 

 (Short-winged phase sometimes called M. fasdaius curtus. The 

 long-winged phase is very rare.) (Not yet reported from N. S.) . . 



[16. fasciatus, p. 296.] 



hh. Wing-covers shorter than pronotum, sub-ovate; cerci of male slen- 

 der, length about four times middle breadth, the middle about 

 half width of base; furcula well developed but short. (Not yet 

 reported from N. S.) [mancus, footnote p. 307.] 



femur- ri^hrum. extremus. hmttatus. 



^ vo 



luridus. fasciatus. Tnancus. 



Distinguishing Forms of Cerci of Males of Species of Melanoplus. 

 (Enlarged about 11 times.) 



Females. 



The following key is a modification of^that given by 



Morse. Species not j^et actually reported from Nova 



Scotia are enclosed in square brackets. 



