TRANSACTIONS 
OF THE 
New York AcADEMY OF SCIENCES 
LATE 
LYCEUM OF NATURAL HISTORY. 
VOLUME. XI. 
October, 1891, to June, 1892. 
Kdited by the RECORDING SECRETARY, assisted by the PUBLICATION COMMI?TTER. 
JINEW YORK: 
PUBBISHED BY THE.ACADEMY. 
