TABLE OF CONTENTS. 



Pago. 



Title of Volume XII of the Final Reports ; i 



Letter to the Secretary iii 



Title of Fresh-water Ehizopods -. v 



Letter of Transmittal vii 



Table of Contents ix 



Introduction 1 



General Rcmarlis on the Ehizopods 4 



Fresh-water Ehizopoda ■. 23 



Protoplasta , 23 



Protoplasta Lobosa 23 



Amcoba 30 



AmoBba proteus 30 



verrucosa 53 



radiosa ♦. 58 



villosa 62 



Ouramoeba C3 



Ouramceba vorax 67 



botulicauda .' 71 



Pelomyxa '. . 72 



Pelomyxa villosa '. 76 



Dinamceba 60 



Dinamoeba mirabilis 81 



Hyalodiscus 94 



Hy alodiscus rubicundus 94 



Difflugia 95 



Difflugia globulosa , 96 



pyriformis .T'. 98 



urceolata 106 



cratera ." , 108 



acuminata 109 



lobostoma 112 



arcula 116 



corona 117 



constricta 120 



spiralis 1-4 



Hyalosphenia - 1£8 



Hyalosphcnia qnneata I49 



papilio 1:>1 



tiiiota 138 



elegans l'^" 



Quadrula , l^'J 



Quadrula symmetrica - 14~ 



Nebela '■ 145 



Nebela collaris 145 



