


The American Naturalist. 
ASSOCIATE EDITORS: 
merican Museum of Natural History, ae York. 
Balti 
ersi 
H.D., University = California, Berkeley. 
l, PH.D., Lake Forest University. 
RTMANN, PH.D., Princeton University. 
ENHALLOW, S.B., F.R.M.S., McGill E Montreal. 
ES ee S.D. Col umbia Un nivers ity, New k. 
RIT i of. 
