PROTOZOA. 
795 
been in use, and believes neither genus to be necessary. The type of the 
former is llmiera dura, and of the latter Eaperia calyx, Nardo. 
These three last referred to works are so indispensable to the 
student of this portion of natural history, and the descriptions of 
the new genera and species are so difficult to understand without 
constant reference to the plates, that the descriptions themselves 
must be consulted in order to be intelligible. 
Tethca hispida, sp. n., Bowerbank (Canadian Naturalist, p. 304). 
Sponyilla dawsoni, sp. n., Bowerbank, sp. n. {1. c. p. 305). 
• Darwinia mtilleri, sp. n., Schultze (/. c. p. 0). Schultze very briefly de- 
scribes this new Sponge from Besterro (Brazil) ; it would appear to have affi- 
nities to the keratose, siliceous, and calcareous sponges. We presume we 
shall have further details in the Archiv fiir mikroscopische Anatomie. 
Pollinida ovum, sp. n., Harting (I. c. p. 13, fig. 37), Banda Sea, 1200 
fathoms ; P. renifoi'mis, sp. n., Harting (p. 18, fig. 55) j P. hispida, sp. n. 
(p. 18, fig. 50) ; P. minuta, sp. n. (p. 18, fig. 57). 
III. Riiizopoda. 
New genus and species : — 
Amocha monociliata, Carter, Ann. & Mag. Nat. Hist. xiii. p. 21, Bombay. 
Difflugia compressa, Carter, p. 22, Devon ; D. urccolata, Carter, p. 27, 
Devon ; D. homhayensis, Carter, p. 27, Bombay ; D. elliptica. Carter, p. 28, 
Bombay ; D. peltigeracea. Carter, p. 28. 
Euglyplui compressa, Cart('r, p. 32, Devon. — Euglypha spinosh. Carter, 1. c. 
1805, XV. p. 290, Devon } E. globosa. Carter, p. 290. 
Actinophrys paradoxa, Carter, p. 34, from Bombay. 
Callodicty m. Carter, /. c. p. 289. Pyriform, straight, or slightly bent upon 
itself, bifid at the small extremity, presenting at the larger one an indentation 
from which spring three cilia. Structure transparent, cancellated, composed 
of globular cells, with a strongly marked gveenish granule here and there in 
the triangular spaces between them. Locomotive, swimming by means of the 
cilia ; subpolymorphic, flexible, yielding, capable of assuming a globular 
form or one more or less modified by the body it may incept ; enclosing 
crude material for nourishment in stomachal spaces, and ejecting the refuse, 
like Amoeba. Provided with a nucleus and contracting vesicles. 
C. triciliatum. Carter, 1. c. p. 289, hab. freshwater. Island of Bombay. 
Dr. Wallich (/. c. p. 64), after giving au outline of the 
classifications proposed by Muller, ClaparMe, Lachmann, 
Schultze, and Carpenter, submits the following classification of 
Rhizopoda : — 
I. No definite nucleus ; no contractile vesicle : Herpnemata. 
A. Shell never siliceous : Foraminifera. Lieberkiilmia P Pamphagus ? 
B. Shell always siliceous : Polycystina. 
II. Definite nucleus j no contractile vesicle : Protouermata. 
A. Skeleton solid : PlAgiacanthid.®. Acanthometrina. Thalas- 
sicoLmA. 
B. Skeleton tubular : Pictyochid^, 
