78 BRITISH FRESHWATER RHIZOPODA. 
(= Spherotilus Kitzing, Mig.), and are recognized as 
a distinct species—Cladothrix pelomyxe Veley.* 
The conclusions arrived at by Mrs. Veley with regard 
to Pelomyw are summarized in her paper as follows :— 
(1) The rods are symbiotic bacteria, which com- 
plete their development within the protoplasm of 
Pelomyxa and are then ejected, breaking down into 
free ‘swarmers,’ which are ingested by other Pelo- 
myee, and recommence the cycle. 
«“ (2) The refringent bodies are proteid in nature ; 
they consist of some form of albumin, which is pro- 
bably a waste product of the metabolism of Pelomyza ; 
they have a two-fold relation to the bacteria, supply- 
ing them with a point of attachment necessary for 
their development, and (probably) also with a source 
of nourishment. 
(3) The pseudopodia of Pelomyxa are not always 
blunt and lobose, but often exceedingly attenuated and 
acute, are often reticulate or anastomosing, and of a 
different character from any hitherto described for this 
animal. Classifications based on the lobose nature of 
the pseudopodia are hereby invalidated. 
«“ (4) The division of Pelomyza is of a simple cha- 
racter, in which the nuclei do not play an important 
part. The only other form of reproduction observed 
has been, in a single instance, the production of amcebes, 
whereby the observations of Greeff and Korotneff are 
partly, and those of Penard entirely, confirmed. 
(5) Under certain circumstances a portion of one 
Pelomyxa may fuse with the protoplasm of a portion of 
a second Pelomyaa, the inference from this observation 
being that it may prove necessary to regard Pelomyera 
as a plasmodium.”’+ 
The production of acute, sharply-pointed, pseudo- 
podia (a phenomenon we have never observed), it ought 
to be stated, is not habitual with Pelomyra, except 
under special conditions, ‘as when a portion is con- 
stricted off naturally, or the animal is getting rid of a 
* «Journ. Linnean Soc.,’ Zool., vol. xxix, p. 386. + Loe. cit., p. 393. 
