748 LIFE HISTORIES OF THE PROTOZOA. 
less ones dispersed,” continues Cienkowski. “They were round. 
or angular, with drawn-out points,” and one or more constrictions » 
could be seen in them (Fig. 135, D). “Apparently they were de- 
velopmental stages of the zoospores, obtained as they were in 
course of formation from the contents of the capsule.” Cienkowski 
observed the same process in Collozowm inerme, thus substanti- 
ating his observations on Collosphra, 
In the Rhizopods, then, we know certainly two modes of repro- 
‘ duction :— 
A. By self-division, as in Ameeba. 
B. By the production of zoospores, as in the Radiolaria. 
In ‘the latter the following phenomena take place :— 
~ 1. The capsule is filled with spheroids by a probable division of 
the contents of the capsule, as in the encysted stage of Moners 
and Gregarinida. 
vee ing” of zoospores. 
LITERATURE. 
Naked Rhizopods. 
PA Ueber die 1 stnetet der Ameeben. (Siebold and Killiker’s Zeitschrift, 
~ Kölliker. Das ee nee, ea ee _(Siebold and Kolliker’s Zeitschrift, 
3 1849. Translated in Qu J Micr. Science 53.) 
$ ha 
-> Archer. On some Paa nater Rhizopoda, new or little known. (Quart. Journ. Mier. 
L Sc., 1869-71.) 
3 ; B. Foraminifera 
a ‘Schultze. Ueber den den Organismus der Helps aincaion ieee Bemerkungen iiber die 
` Rhizopoden in Allgemeinen. 1 
_—___—_ Beobach sg ueber die Fortpflanzung der Polythalamien. (Müllers 
: Arehiv für Anatomie, ete. 
Carpenter. 
es Toton- 
h th Foraminifera. (Philosophical Transactions of the 
C. Radiolaria. $ 
Miller. Ueber ‘Me Miclanicuess, Polycystinen und Acanthometren des Mittel- 
meeres. (Abhandlungen der K. Akad. Berlin, 1958.) _ ; 
Heckel. Die Radiolarien. Eine Mondgrapbie, folio, 186: wes 
eber Schwirmerbildung bei Helori y somnav Archiv für i 
ted in Quart. Jou 
enntniss der Radiolarien. (Siebold raid ati zma 
