55S 



THE AMERICAN NATURALIST [Vol. XL 



Among the Iiiscctivoi;. . ( iairopirliccus stands alone in its volant 

 adaptation for it shows ilir w!,.;itr>r >[ .ciaiization for fii.o'iit of any 

 of the Mammalia exrci t the !.;it>. Indct-d ( ;aleoj>itheci!s, while 

 too specialized to he am c^iiai lu the ( hiroptera, i> evidently from 



