32 Prot. 
XVIII. PROTOZOA. 
439. Zykoff, W. Die Protozoa des Potamoplanktons der AVolga bei 
Saratow. Zool. Anz. xxv, pp. 177-180. 
440. -. Das pflanzliche Plankton der Wolga bei Saratow. Biol. 
Centrbl. xxii, pp. 60-62. 
441. * -. Rechenschaftsberichte iiber die Thatigkeit der biologischen 
Wolga-Station in den Sommermonaten 1900. Arb. Ges. naturf. 
Saratow 1900, suppl. to vol. 2, pp. 1-35. [See (365), pp. 562-564.] 
II. BIOLOGY. 
A. Morphology. 
1. General Anatomy. 
Gy mnomyxa General account of: Plasm odiophora brassicce , Feix- 
berg (106) ; Dictydium umbilicatum , Jahn (166) ; Physarum leucophcmm 
var. (?) ferox , a Mycetozoan on fermenting fruit, Chrzaszcz (63) ; the 
Lobosa, systematic and comparative, Penard (289); Amoeba coli and A. 
dysenteries Losch, distinguished, Shiga (355). 
Penard (288) describes a new Bhizopod Clathrella foreli , which, while 
belonging to the Testacea, shews certain characters of a Heliozoan nature. 
The silicious envelope or shell is in several pieces, from between the 
junctions of which the long filiform pseudopodia, recalling those of 
Euglyphina , are thrust out. 
General account of the Foraminifera, Chapman (61).—Megalospheric 
form of Biloculina guerrerii , n. sp., Silvestri (362).—Acervuline and 
Discorbine varieties of Cymbalopora , perhaps Megalo- and Micro-spheric 
forms, Earland (95). Aberrant forms in Nodosana scalaris more probably 
varietal than teratological, Silvestri (360). 
A peculiar Heliozoan with tufts or clusters of minute protoplasmic 
processes at the points where the typical pseudopodia usually arise. 
These tufts exhibited lashing or ciliary movements, and shew the readi¬ 
ness with which pseudopodia and flagella may change into each other, 
Crawley (74).—Notes on Myxodiscus crystalligerus , a new Pleliozoan, 
Prowazek (301). 
General anatomy of Thalassophysa and comparisons with allied genera, 
Brandt (41). 
Sporozoa :•—General description of: Gregarines from larvae of Tenebrio 
molitor , Berndt (19); AdePu ovata , Siedlecki (359a); Caryotropha mes- 
nilii , a new Coccidian from Polymnia vebulosa, Siedlecki (358); Coccidium 
faurei , n. sp., Moussu & Marotel (268); C. schubergi , n. sp., Schaudinn 
(334); Cyclospora caryolytica , n. sp., a new Coccidian from the Mole, 
Schaudinn (335) ; Isospora mesnili , n. sp., the two sporocysts of which 
are each tetrazoic, Sergent (354); Klossiella muris, n. g., n. sp., a new 
Coccidian, Smith & Johnson (368); Paracoccidium prevoti, n. g., n. sp., 
and Coccidium romarum , n. sp., Laveran & Mesnil (206) ; Hcemamoeba 
majoris , n. sp., and H. ziemanni, n. sp., Laveran (195) ; Hcemogregarina 
stepanowiana , n. sp., and H. rara n. sp., Laveran & Mesnil (202) ; 
Karyolysus lacertarum , Marceau (243) ; LanJcesterella minima from the 
Frog’s blood, Hintze (159) ; Plasmodium vivax , Schaudinn (336), Ar- 
gutinsky (5); Piroplasma cams, Nocard & Motas (276); P. bigeminum 
(of “Tristeza”), Lignieres (227). 
Short account of: Henneguya zschokkei Gurley, the two valves of the 
spore are not identical, Fuhrmann (131); Sphoerospora masovica, n. sp., 
Cohn (67).—General account of Thelohania mulleri , Stempell (377). 
