192 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



tapering considerably in the basal half, then suddenly bent inward and 

 considerably expanded so as to be as broad apically as basally, while 

 at the same time they are slightly twisted, sulcate and much more lam- 

 inate and the lower apical angle is slightly produced, tucked beneath 

 the pallium and just fails to reach the tip of the supraanal plate ; sub- 

 genital plate of subequal breadth, feebly flaring, the lateral and apical 

 margins in the same plane, entire. 



Length of body, c? , 28.5 mm., ? , 35 mm.; antenna;, c? , 1 1 mm., 

 ?, 10 mm.; tegmina, cj' , 25 mm., ? , 28.5 mm.; hind femora, cT , 

 15 mm., ? , 18 mm. 



5 d^ ) 13 ?• Ceres, Stanislaus Co., California, August 17, A. P. 

 Morse. 



The bleached appearance of this insect has suggested the name. It 

 is very closely related to Af. cinereus and may possibly be more prop- 

 erly regarded as a varietal form of that very variable species, peculiar 

 for its color, the less abruptly and considerably twisted male cerci, and 

 the more pronounced inferior production of their apical angle. 



Packardii Series. 



Colorado furnishes an aberrant member of this series, forming pass- 

 age to the succeeding (Collinus) series. The male cerci are not 

 bifurcate, but the lower apical angle is excessively produced and de- 

 curved, leaving an angle where an upper fork should be, to bring it in 

 the Collinus Series in the near vicinity of alpinus and infantilis; there 

 being, however, no fork whatever, I have thought it beat to place it here 

 and to separate it bodily from the other members of the series as follows: 



table of the species in the packardii series of melanoplus. 



Cerci of male with the apex symmetrically or almost symmetrically rounded. 



packafdii Scudd., etc.* 

 .Cerci of male with the lower inferior angle produced to an acuminate blade. 



pilatiis sp. nov. 



Melanoplus pilatus sp. nov. 



Plate IX., Figures i, 2. 



Rather below the medium size and moderately slender, testaceous, 

 marked with fuscous. Head a little prominent, luteo-testaceous, more 

 or less flecked with fuscous, especially above, where it may be heavily 



♦Separated as in the Revision, pp. 136-137. 



