FLAGELLATA, RHIZOfODA. 
Pl'Ot. 1 2 
mussels. The presence of these unicellular organisms was found iuti- 
mately associated with diseased shells of these mollusks, and clean shells 
placed in the water containing them became diseased and infected with 
the Micrococci in a like manner. 
Phillips, F. W. On Chlorodcsmos liispida , a new Flagellate Animal- 
cule. Tr. Hertf. Soc. ii. pp. 92-94, 1 pi. 
Chlorodesmos hispida , g. & sp. nn., occurs in colonies of about thirty 
zooids, grouped laterally in a chain-like manner, and apparently united 
by a liyalino ligamont of oxtromo delicacy. Component zooids inhabiting 
close-fitting, transparent, sub-triangular loricge ; the surface of the lorica 
beset with minute spinous processes of even length. Tho narrower 
anterior extremity of the zooids perforated by the oral aperture, and 
bearing two loug equal flagella. The endoplasm enclosing two well- 
marked lateral pigment bands of a greenish hue. Motions of a twofold 
nature, the entire chain of zooids elongating and contracting, the chain 
during elongation extending to about five times the retracted length, and 
the zooids closing separately upon one another in a clapper-like manner. 
Inhabiting fresh-water. Allied to Uvella, and referable to the same family 
of the Chrysomonadidce, S.-Kent. 
Wille, N. Om Chrysopyxis bipes , Stein, og Dinobryon sertularia, Ehr. 
(Efv. Ak. Forh. xxxix. No. 6, pp. 9-22, pi. 
Parker, T. J. Recent Researches in the Cilio-Flagellata. Q. J. Micr. 
Sci. xxii. pp. 416-420. 
RHIZOPODA. 
Leidy, J. On Actinosphcerium, eichhorni . P. Ac. Philad. 1882, 
pp. 260-262. 
Examples of abnormal size of Actinosphcerium cichliorni , at first taken 
for eggs, were found adhering to leaves of Valisneria in an aquarium. 
The diameter of their bodies, excluding the rays, varied from three- 
fourths to ono millimetre in diamotor. As food, the smallor and larger 
animalcules had absorbed, and retained at one meal, from three or four 
to as many as six water-fleas, of the genus Daphnia. 
Gruber, A. Beobachtungen an Actinophrys sol. Zool. Anz. v. 
pp. 423-426. 
The examination of a large number of individuals of this Heliozoon 
revealed the fact that in the smaller examples no trace of a nucleus could 
be detected even with the use of reagents. The conjugation of full- 
grown nucleated with these smaller un-nucleated animalcules was re- 
peatedly observed. The deduction is arrived at, that the nucleus in 
these organisms is in no way essential to functions other than those of 
reproduction. 
Brady, H. B. Note on Kcramosphcera, a new type of Porcellaneous 
Foraminifera. Ann. N. H. (5) x. pp. 242-245. 
The diagnosis of this new genus is thus given: Test free, porcellaneous, 
1882. [VOL. XIX.] E 6 
