THE NEMATOCYSTS OF EOLIDS' 
OTTO C. GLASER 
Assistant Professor of Zoology, University of Michigan 
ELEVEN FIGURES 
CONTENTS 
Introduction 117 
Evidence bearing on the origin of the nematocysts 120 
The diet of eolids 121 
Identity of eolidian and ccrlenterate nettles 121 
Indigestibility of nematocysts 123 
Change of diet 124 
Eolids devoid of nematocysts 124 
The transfer of the nematocysts 12G 
Discussion 132 
Summary 142 
Bibliography 142 
INTRODUCTION 
The note on the nematocysts of nudibranch molluscs which I 
published in the Circular of the Johns Hopkins University in 
March, 1903, was the outcome of suggestions made by Professor 
Brooks, not only as to the possible origin of eolidian nettles, but 
as to the advisability of presenting at once the evidence at that 
time available. The necessity of teaching in summer schools 
during the only months when work on eolids is possible has 
caused the delays which have robbed me of the pleasure of offer- 
ing my results prior to partial anticipation by others, and in time 
for Dr. Brooks to see them. 
^From the Zoological Laboratory of the University of Michigan. 
