PROTOZOA. 
683 
with a nucleus, giving off rhizopodial processes of two kinds, — one from the 
anterior end, long, pellucid, and retractile ; the other given off from the body, 
short, pellucid, and persistent, enclosed in a test formed of foreign particles 
loosely agglomerated. D. mohilc^ sp. n.. Archer, I, c. p. 394, pi. 20. fig. 6, 
Glen-ma-lur Valley, co. Wicklow j very rare. 
Am^phitrema wrightianum^ gen. and sp. nov., Archer, 1 . c. p. 397, pi. 20. 
figs. 4, 6. (Diagnosis not given in the October number.) 
Gromia socialis, sp. n., Archer, 1 . c. p. 390, pi. 20. figs. 7-11. 
AmaibcB. Mr. Tatem (/. c. p. 352) describes some forms of Amoeba with a 
very fine long undulating flagellum. A. villosa abounded in the water in 
which this form occurred, to the exclusion of almost every other known 
species ; and the author suspects the flagellated forms to be but some phase 
of Aynoeha life. 
Amoeba quadrilineataf Carter, from India, described as Irish by Barker. 
Quart. Journ. Mic. Science, 1869, p. 94. 
ThalassicoUa {Sphcerozoiim) and Collosphcera. Wallich, 1 . c., suggests that 
these genera are the same : he is not prepared to allow that this genus forms 
the connecting-link between the Sponges and Foraminifera : — first, because 
the mode of siliceous deposit characteristic of the sponges is not met with in 
the Thalassicollidfc, but in the Dictyochidm, as he has shown elsewhere ; and, 
sceondly, because the presence of a nucleus, and the much more highly dif- 
ferentiated condition of the rest of the sarcode-substance, attest the exist- 
ence of a more advanced type in ThalassicoUa than in the Foraminifera. 
ThalassicoUa nucleata. Macdonald, 1 . c. p. 149, mentions that this species 
gives out a phosphorescent light on being irritated. 
Cadiiim. Wallich (l.c.) describes the following new species: — C. cau- 
datunij l.c. p. 109, pi. 3. figs. 7, 8, 9, 10, 12. Several well-marked varieties 
of C. marinum, Baily, are also described and figured. Hah. North Atlantic, 
at depths varying from 371 to 2000 fathoms. 
Protocystis, g. n., Wallich, 1. c. p. 109. Shell siliceous, entire, hyaline, 
Rubglobular; surface of shell fitted with minute circular depressions. P. au- 
rita, sp. n., Wallich, 1. c. p. 110, pi. 3. figs. 16-17, North Atlantic, 871 fathoms ; 
P. ciispidata, sp. n., Wallich, 1. c. p. 110, pi. 3. fig. 19 (this species is called 
in the explanation of the plate P. spinifera), North Atlantic, 2000 fathoms. 
Hackel’s Monograph of Monera will be found translated in the Quart. 
Journ. of Mic. Science for 1869, pp. 27-42, 113-134, 219-232, 327-342, 
pis. 9 & 10. It is to be noted that while the figures are reduced to about 
one-half the size of the original figures, the dimensions given in the descrip- 
tions of the plates are the same as in the original memoir, and are thus 
wrong by one-half. 
KNI) or THE SIXTH VOLUME. 
PRIXTEI) RY TAYf.on AND FRAXCIS, RED LIOX COURT, FLEET STREET. 
