PROC. U S. NAT MUS. VOL. 110 



GURNEY AND BROOKS. PLATE 4 



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A, Melanoplus bilituratus defectus, male, from Chandler, Ariz, b, M. borealis utahensis, 

 male, from Ogden, Utah, c, male, intermediate between M. borealis utahensis and M. borealis 

 palaceus, from } miles north of Mantua, Utah, d, .1/. borealis palaceus, male, holotvpe. 



