TABLE OF CONTENTS. 



Tagc. 



Title of Volume XII of the Final Reports i 



Letter to the Secretary iii 



Title of Fresh-water Rhizopods v 



Letter of Transmittal vii 



Table of Contents ix 



Introduction 1 



General Remarks on the Rhizopods 4 



Fresh-water Rhizopoda 23 



Protoplasta 23 



Protoplasta Lobosa 23 



Amoeba 30 



Amoeba proteus 30 



verrucosa 53 



radiosa 58 



villosa 62 



Onramoeba 66 



Ourainccba vorax 67 



botulicauda "1 



Pelomyxa 72 



Pelomy xa villosa 76 



Diuamceba SO 



Dinamceba inirabilis 81 



Hyalodiscus 94 



Hyalodiscus rubicundus 94 



Difflugia 95 



Difflugia globulosa 96 



pyriformis 98 



urceolata 106 



crat era 108 



acuminata 109 



lobostoma 112 



arc ula r 116 



corona 1 17 



constricta , 120 



spiralis •. 1-4 



Hyalosphenia 128 



Hyalosphenia cuneata 1-9 



paj)ilio 131 



tiucta 138 



elegans 116 



Quadrula 142 



Qnadrula symmetrica •. 142 



Nebela 145 



Nobela collaris 145 



ix 





