ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 589 



for an acid, an alkali, and for two substances belonging to the group of 

 alcohols — namely, glycerin and methyl-alcohol. In all cases the animals 

 which had acquired an increased resistance to ethyl-alcohol as a result 

 of living in a 1 p.c. solution showed no increase, or an actual decrease of 

 resistance to other chemicals. Thus the immunity produced by ethyl- 

 alcohol is specific ; it does not produce protection against all chemicals. 



Study of Lophomonas.* — C. Janicki describes the structure, division, 

 and encystation of Lophomonas bJattarum Stein and L. striata Butschli, 

 two remarkable parasitic Flagellates in the hind-gut of the cockroach. 

 The genus is most nearly related to Jama, Trichonympha, and Micro- 

 somia. 



Hastatella radians.f — P. de Beauchamp and B. Callin discuss this 

 interesting free Vorticellid, which is characterized by the presence of 

 two crowns of peculiar sharp " fulcra " — delicate pointed prolongations 

 which perhaps aid in flotation. 



Protozoon Parasites in Blood of Fishes. :£ — R. 0. Naumann has 

 studied Mediterranean and Adriatic fishes, especially ground-fishes. About 

 3-4 p.c. had blood-parasites — Hasmogregarines, Trypanosomes, etc. Spiro- 

 chffits were found in Gadus minutus and Pelamys sarda. Two new types 

 are described, Gobidium multifidum from Gobius minutus and Amoylossus 

 grohmanni, and Immanoplasma scylli from the dog-fish, Scyllium canicula. 



Studies on Amoebae. § — A. Schepotieff has studied in the first place 

 the marine Amoeba flava Gr., and describes the following stages : large 

 multinucleate forms (= Pelomyxa-stage), multinucleate cysts in which 

 the nuclei form chromidia and secondary nuclei arise, swarm-spores (iso- 

 gametes), conjugation, mononuclear forms. In the second place he 

 describes a species of Nucleophaya, a parasite of marine Anicebre. Its 

 stages resemble Prowazek's Chlamydozoa, which are said to be the causes 

 of variola, scarlet fever, hydrophobia, and many other diseases. Sche- 

 potieff distinguishes stages in normal nuclei, in hypertrophied nuclei, 

 and in the cytoplasm. He presumes that there are also stages free in 

 the water which spreads the infection. It spread like an epidemic among 

 his Amoebae. 



New Genus of Arenaceous Foraminifera.|| — J. A. Cushman describes 

 Ammodiscoides turbinatus g. et sp. n., from 1181 fathoms in the Gulf 

 of Mexico. The genus is split off from Ammodiscus, which is piano- 

 spiral both in the young and in the later stages, while Ammodiscoides 

 is definitely conical when young. The entire spiral test consists of as 

 many as thirty coils, the later portions becoming usually conical in the 

 opposite direction from that of the younger portion. 



* Zeitschr. wiss. Zool., xcv. (1910) pp. 243-315 (4 pis. and 16 figs.), 

 t Arch. Zool. Exper., v. (1910) Notes et Revue, No. 1 (pp. xxviii-xxxiii (2 figs.). 

 % Zeitschr. Hygiene u. Infectionsk., lxiv. (1909) pp. 1-112. See also Centralbl. 

 Bakt. Parasitenk., xlvi. (1910) pp. 323-5. 



§ Zool. Jahrb., xxix. (1910) pp. 485-526 (1 pi.). 



j| Proc. U.S. Museum, xxxvi. (1909) pp. 423-4 (1 pi.). 



