SYSTEMATIC, MORPHOLOGY AND LIFE-HISTORY. Prot . 11 
^ Paraisothricha , n. g., with n. spp. P. colpoidea , P. oblonga , P. ovalis , 
P. triangularis, P. ampulla, P. incisa, id. p. 53. 
/ Diplodinium, n. g., Fiorentini, (1) p. 87, n. spp., D. vortex , D. maggii , 
D. bursa , Z). dentatum , D. denticolatum, D. ecaUdatum, D. rostratum, Di, 
cattanei , ee?. D. uncinatum , B. unifasciculatum ; id. (2) pp. 11 & 12. 
Entodinium rostratum, n. sp., ie?. p. 89. P. valvatum, id. (2) p. 13. 
Butschlia lanceolata , n. sp., id. p. 89. 
^ Hastatella radians, n. g. & sp., Erlanger, p. 65, pi. xxix. 
See also Butschli, (1) p. 265. 
Class 6. — ACINETARIA. 
TrichopTiyra angulata, n. sp., Dangeard (2). 
III.— MORPHOLOGY AND LIFE-HISTORY. 
General. 
Pouciiet (2) treats of the structure, duration of life, and artificial 
feeding (with white of egg) of Noctiluca. 
Penard (3) publishes a monograph on the freshwater Rhizopoda . A 
full account of their structure and life-phenomena is followed by a sys- 
tematic portion, which includes the description of many new species. 
Hartog describes a Monadine parisitic in Saprolegniece and discusses 
its relation to organisms previously observed by Lindstedt, Pringsheim, 
and Zopf. The mastigopod stage had not been observed by those bota- 
nists. The zoospores always appear in the evening, about nine o’clock. 
They soon penetrate the hyphae, piercing the wall with a long pseudo- 
podium. A “ Heliozooid ” form is then assumed. The changes induced 
in infested hyphae are described. The pseudopodia next are retracted, 
and the body becomes spherical, giving the “ zoocyst ” stage. The nuclei 
subdivide, and then the protoplasm breaks up into zoospores. One of 
these bores through the cyst wall, and the others follow through the same 
hole. It never attacks green algae as Pseudospora parasitica does. 
Balbiani (1) has studied the nucleus of Loxophyllum meleagris. It 
consists of twenty or more distinct segments or joints inclosed in a com- 
mon enveloping membrane. The segments each contain one or more 
convoluted nuclear cords, and a granular intermediate substance. The 
cords are finely striated. 
Pouciiet (1) has found granular protoplasmic masses parasitic in the 
females of Copepods, which when passed out at the anus develop into* 
Peridinoan like biflagellate forms. 
Grassi & Feletti believe that malaria is due to amoebiform parasitic 
Rluzopoda. Ordinary malaria seems to be caused by the genus 
Hcemamaiba malarias, while Laverania malarias seems to be responsible 
for an irregular form of the disease. The observed flagellate forms are 
probably the results of degeneration. 
