










| VoL. XXXVI, No. 42627 
THE 
MERICAN | 
NATURALIS 

A MONTHLY JOURNAL qp e 
DEVOTED TO THE NATURAL SCIENCES = 
IN THEIR WIDEST SENSE EK EE 
= =e CONTENTS 
E -The Life Hi: ES y f Ul 1s hy li Sar Seka : 
; II. The Nemertean Parasites of Crabs . . . 
< — dp ona iaa] Origin of the Cnieted apogei 



prs Pueri ed” ing et € 




