ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
203 
Protozoa. 
Text-Book on the Protozoa.* * * § — MM. Y. Delage and E. Herouard 
have published a large work on the Cell and the Protozoa. It combines 
a detailed description of types with a systematic account of the genera, 
and with a discussion of protoplasm and the cell as a sort of back- 
ground. Four classes of Protozoa are distinguished : — Bhizopodia, 
Sporozoaria, Elagellia, and Infusoria. The book is adorned w T ith great 
abundance of illustrations, many of which are coloured. 
Argentine Protozoa. I — The fourth part of the late Prof. J. Frenzel’s 
studies of Argentine Protozoa contains descriptions of many new Bliizo- 
pods. Four forms — Gringci filiformis, Aboenia angulata, Eichenia rotunda , 
Microhydrella tentaculata — represent new genera. There is also a 
general discussion of the classification and geographical distribution of 
fresh-water Bhizopods. More than half the European species are known 
outside Europe ; and, although much has still to be done in the way of 
description and recording, the majority may be already called cosmo- 
politan. The talented author lost his life through an accident on the 
Miiggelsee. 
Studies on Amoebae.:]: — S. Prowazek observed a small amoeba in an 
aquarium with very concentrated sea-water, and saw a peculiar behaviour 
of the contractile vacuole. In its diastole it was protruded on the 
periphery of the ectoplasm, and almost constricted off ; in its systole it 
emptied itself inwards. As the process seemed to be normal, the observer 
suggests that the fluid in the vacuole was aerated or oxidised by the 
exposure, and that the process was really respiratory. In another note 
he describes the transformation of a small organism from a flagellate 
to an amoeboid phase. 
Fresh-water Bhizopods from Spitsbergen.§ — Mr. D. J. Scourfield 
has found, in mosses collected during the Conway expedition to Spits- 
bergen in 1896, about twenty-one species of Bhizopods. None of these 
appear to be new to science, but they are nearly all new to the known 
fauna of Spitsbergen, as the only information about these animals pre- 
viously published was a record of three species by Ehrenberg in 1874. 
The commonest form Mr. Scourfield found to be Difflugia constricta 
Ehrbg., but Euglypha ciliata Ehrbg. and Trinema enchelys Ehrbg. were 
also very abundant. The genera Arcella , Glathrulina , and Gromia , on 
the other hand, were each represented by only a single specimen. 
Two new Protozoa. || — Dr. B. Lauterborn, continuing his faunistic 
studies on the Upper Bhine, describes Chromulina mucicola sp. n., a 
flagellate Infusorian, living in large groups surrounded by a gelatinous 
secretion ; and the ciliated Infusorian Tr ichor Jiynchus Erlangen sp. n., 
which, besides being interesting in itself, is noteworthy in connection 
* ‘ Traite de Zoologie concrete. Tome i. La cellule et les Protozoaires,’ Paris, 
1897, 8vo, xxx. and 584 pp., 870 figs. 
t Bibl. Zoologica (Leuckart and Chun). Heft 12, Lief. 4 (1897) pp. 115-66 
(4 pis.). % Biol. Centralbl., xvii. (1897) pp. 878-85. 
§ Proc. Zool. Soc., 1897, pp. 786-89. 
11 Zool. Anzeig., xxi. (1898) pp. 145-9 (2 figs.). 
