37a. Tips of furculae convergent (Fig. 62). Coloration variable, but often richly marked. Body relatively slender. Cerci relatively broad at base (Fig. 63) ... M. pictus Scudder PICTURE SPUR-THROAT GRASSHOPPER 37b.Tips of furculac not convergent. Coloration rather plain. Body less slender and cerci more slender than M. pictus                 .............................. 38 38a. Lateral lobes of prozona with dark band on upper parl Center of tegmina often with dark and light flecks along n-ii0m. Aedea- gus folded at tip (Fig. 64). Cerci as in Fig. 65. Often found on composite shrubs, usually Artemisia ... M. bowditchi Scudder BOWDITCH'S SPUR-THROAT GRASSHOPPER 38b. Lateral lobes of prozona without a distinct band. Tegmina with- out niidline flecks. Aedeagus cup-like at fip (Fig. 66). Cerci as in Fig. 65. A typical species of bare patches and blow-outs in sand hills ... M. jzavidus Scudder 39a. Male cerci very much wider at apex than at base                    ..........  40 39b.Male cerei with apex about as wide as base or narrower ....................................................................................... 42 40a. Male subgenital plate seen from rear equilaterauy hi- angular (Fig. 67). Cerci abruptly widened (Fig. 68) ... M. yarrowi (nomas) YARROW'S SPUR-THROAT GRASSHOPPER 40b.Male subgeniw plate seen from rear not triangular ................................................................................. 41 41a.Furcul     ae short and slender (Fig. 69). Male sub- genital plate rectangular as seen from rear (Fig. 70). Body with a clear, smooth look with few speckles. Cerci as in Fig. 71 ... M. glaucipes (Scudder) GLAUCOUS-LEGGED GRASSHOP- PER 41b.Furculae reduced to knobs (Fig. 72). Male sub- genital plate seen from rear a-amzoidal (Fig. 73). Body with dull, rough look because of speckling. Cerci as in Fig. 74. Sometimes wings are reduced ... M. occidentalis (Tbomas) FLABELLATE GRASSHOPPER 42a. Male cerci spoon-like, narrow at middle (Fig. 75)    .................................................... 43 42b.Male cerci not spoon-like or narrow at middle     ....................................................... 44 43a. Coloration darker, with longitudinal dark band on center dorsal pronotum and behind eye on lateral lobe as viewed