PROTOZOA. 
647 
existing in tlie psouclopodia of the Polytlialamia, and that should such even- 
tually prove to have an existence in these Protozoa, independently of those seen 
in the ‘‘ granular movement,” they will be found to have nothing to do 
with it. 
Radiolaria. Stuart {1. c. p. 328) proposes to arrange as fol- 
lows tlie Ethmosphaerida, Haekel. 
Subfamily 1. Coscinos^dim ida, Stuart. Skeleton consisting of a single cal- 
careous sieve-like shell, with numerous radial cilia. 
Genus Coscinosphceraj Stuart. 
Subfamily 2. Keliosphcerida^ Hack. Skeleton consisting of a single extra- 
capsular trellis-like bowl, with or without radial spicula. 
Genera : Cyrtidosphcera, EthmosphcBray lieliosplicera. 
Subfamily 3. Araclinospli<jcrida^ Hack. Skeleton consisting of two or more 
concentrically arranged extracapsular trellis-like bowls, fastened together by' 
radial bars. 
Genera : Diplosphcera, Ai'achnosphcera, 
W. Archer takes the opportunity of exhibiting ten species of Rhizopods 
from the same pond of fresh water, to state his conviction of the stability of 
specific forms among the freshwater Rhizopods, dwelling especially on the im- 
portant fact that like form is always found in contact (conjugated) with like 
form. Many interesting facts will be found recorded in this paper. Quart. 
Journ. Micr. Scien. 1866, pp. 185-189. 
Amoeba villosa, Wall. Archer describes the presence of a large and nume- 
rous tuft of very long prolongations, commonly issuing from j ust behind the 
villous patch described by Wallich; these prolongations were not of parasitic 
origin, but veritable portions of the sarcode, and would seem to indicate a 
yet higher differentiation of parts than hns yet boon obsorved in this group. 
Quart. Journ. Micr. Scien. 1866, p. 190. 
Archer calls attention to a Rhizopod, referred somewhat doubtfully to Dif- 
Jluyia corona^ in which a tuft of very slender linear appendages of greater or 
less density were found issuing from the apex of the horns ; these tufts were 
often as long as or longer tlian the whole creature, test and all j their consider- 
able resemblance to the slender linear prolongations from the body of Amoeba 
villosa was referred to. Quart. .Tourn. Micr. Scien. 1866, p. 266. 
AiiCOCK: gives an account of some 58 species and varieties of Foraminifera 
from Roimdstono Ray, co. Galway, and describes two now forms Entosohnin, 
E. williammni and E. montayui. (),uart. Journ. Micr. Scien. January 1866^ 
pp. 73-77. 
H. B. Brady mentions that among the Foraminifera dredged by Mr* 
Jeffreys in the Hebrides he had been able to determine 76 out of the 121 Bri- 
tish species or permanent varieties; in addition to these he refers to a new 
Lagena {L. jeffreysU). The result of Mr. Brady’s researches will be pub- 
lished in detail. Quart. Journ. Micr. Scien. 1866, p. 261. 
Coscinosph<T.ra, g. n. Stuart (/. c. p. 329) describes this new genus, consist- 
ing of a single species of Radiolaria ; the following would appear to be among 
the chief generic characteristics of this remarkable form : — Skeleton, consist- 
ing of a chalky envelope, shaped like a thin liollow ball, perforated by rows of 
concentric ovaloid openings, between which, in most cases, will be found a 
a series of smaller round openings. Out of these latter proceed thin flexible 
