MUEIDJE— SIGMODONTES— SIGMODON HISPIDUS. 



37 



genus. In entering at once upon the discussion of the nominal species that 

 have been coined at the expense of Sigmodon hispidus, we first present a 

 table of measurements of thirty-four specimens collected in the same locality 

 by the same persons. A part of the measurements being from alcoholic speci- 

 mens and the rest from very nicely-prepared skins, the figures are reliable. 

 They serve to indicate the normal individual variability of the animal in size, 

 unaffected by geographical or climatic influences, and give us data in the 

 problem that cannot be gain say ed. 



Table VII. — Measurements of thirty-four specimens of SlGMODON hispidus from Society Hill, South Carolina, 

 collected in 1855-56 by Rev. M. A . Curtis and sons. 



