24a. Male subgeniw plate as high as wide. FurcuW small. Supra-anal plate with transverse ridges beyond middle (Fig. 40). Cerei large, sUW-Iike (Fig. 41). Tegmina often shorter than abdomen ... M. fasciatus (Walker) HUCKLEBERRY SPLJR-THROAT GRASS- HOPPER 24b.Male subgenital plate variable. Furculae variable. Cerei not usually str*-Iike. Tegmina variable but not in above combination                       ..........  25 25a. Male subgenital plate wider than high (Fig. 42). Furculae large. Cerci broader at base than apex (Fig. 43). Hind femora without distinct crossbands. Tegmina variable ... M. borealis Fieber NORTHERN SPUR-TifROAT GRASSHOPPER 25b. Male subgeniw plate variable. Furculae variable. Cerci vari- able, but not in above combination              ........................................ 26 26a. Male cerci swollen from base with finger-Ue projections directed upward and inward (Fig. 44) ... M. lakinus Scudder 26b.Male cerci not swollen with fmger-like projections di- rwted upward and inward             .............................................. 27 27a.Male with tegmina as long as abdomen or longer ................................................................................. 28 27b.Male with tegmina shorter than abdomen                     .............. 45 28a. Male cerci with projection on upper sides, some- times boot-shaped (Fig. 45). Furculae small ... 29 28b.Male cerci without projection on side. Furculae large or small      ................................................... 31 29a.Male with furculae hornlike (Fig. 46). Sub- genital plate transverse as viewed from rear (Fig. 47). Cerci with prominent tooth at side, not boot-shaped (Fig. 48) ... M. confusus Scudder LITTLE PASTURE SPUR- THROAT GRASSHOPPER 29b.Male with furculae reduced, blunt, not horn- like. Subgenital plate not transverse. Cerci boot-shape,d or branched           .......................... 30 30a.Male =ci with prominent long spur projecting from side, not boot-shaped (Fig. 49). Hind tibia red. Supra-anal plate with sides curved (Fig. 50) ... M. keeleri (Tbomas) KEELEWS SPUR- THROAT GRASSHOPPER 30b.Male cerei boot-shaped (Fig. 45). Hind tibiae pale blue. Supra-anal plate with