ARCHER—ON RHIZOPODA. 283 
they must subdivide by internal self-fission, a new nucleus appearing in 
each half of the divided cell; in these points, then, the cells of C. Haecke- 
liana agree, with the exception of the wall only (not the contents) being 
of a yellowish colour. I do not yet see, indeed, that the ordinary struc- 
tures met with pervading the general body-masy of certain Rhizopoda 
ean be truly said to come under the same category as the cells of my 
forms; and hence I think Wallich’s views alluded to are not yet jus- 
tified. 
Further, I venture to think that Greef’s suggested comparison of the 
green (chlorophyll) granules of A. turfacea with the “‘ yellow cells’’ is 
not tenable. I take these green granules occurring in that form, as well 
as in Raphidiophrys viridis, Heterophrys myriopoda, Pleurophrys amph- 
tremovdes, occasionally in certain Difflugic, &c., as all one and the same 
thing—chlorophyll—either persistently or temporarily characteristic 
here, as in certain other lowly animal forms, and can no more be the 
homologues of ‘‘ yellow cells” in the one than the other. 
Cystophrys Haeckeliana (Arch.). 
PENI fest, 2: 
Specific Characters.—Sarcode body-mass very polymorphous, colourless, 
granular ; tmner cells rather large, orbicular, their walls yellowish, thin ; 
contents bluish, granular; nucleus white, excentric; nucleolus dark, 
very minute ; pseudopodia slender, irregular, variable in length, granular, 
more or less arborescent, the branches occasionally inosculating. 
Measurements.—Size of examples variable. Diameter of inner cells 
from about +3/5,” to as small as 55/55’. 
Localities. —One or two pools in Callery and Carrig neighbourhoods, 
Connemara, Westmeath, sparingly ; rare. 
Affinities and Differences.—Distinguished at once from the following 
by its large orbicular central cells, with pale (not reddish) nucleus, and 
its granular arborescent (not linear and unbranched) pseudopodia. 
Cystophrys oculea (Arch. ). 
BE Vb tte 73: 
Specific Characters.—Sarcode body-mass maintaining more or less of a 
rounded figure, though locomotive power sometimes rather active, homoge- 
neous, of a slightly bluish tint ; inner cells orbicular or sub-elliptic, minute, 
walls not definitely perceptible; contents hyaline; nucleus (2?) varying from 
yellow to red, sharply bounded ; nucleolus (2?) dark, very minute ; pseudopo- 
dia very slender, varying in length, but averaging from about that of the 
diameter of the body to about one-half, straight, linear, hyaline, unbranched, 
radiating in many directions, and then sometimes crossing each other, but 
not mosculating. 
VOL. V. Me 
