ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 315 



Amoebae and Diseases of Domestic Animals.* — E. Lebmann deals 

 with amoeboid dysentery in the horse, anioebEe on the wall of the paunch 

 and psalterium in cattle and on the intestinal wall in sheep. The 

 amoebffi induce a neoplastic growth of tissue, and subsequently an 

 infectious granuloma, which in course of time breaks down in necrosis. 

 The histolysis seems to be due to a " necrotising " ferment. 



Notes on Sarcodina.f — E. Penard discusses Bullinula indica Penard, 

 a large Rhizopod recorded from the Himalayas, Geneva, and Britain, 

 Trigonopyxis arctda (Leidy), various species of Diffiugia, and Pamphagus 

 granulatas (F. E. Schulze). He calls attention to the very rare 

 occurrence of double shells, e.g. in Diflugia and in Phryganella nidulus. 



Scottish Rhizopods and Heliozoa.| — James Meikle Brown reports 

 a number of species not previously recorded in Scotland, e.g. Nebela 

 longicollis, N. tubulata, N. Ugibbosa, and Sphenoderia macroUpis. He 

 notes the wide distribution of some species frequently regarded as rather 

 rare, e.g. Placocysta spinosa and Sphenoderia fissirostris, and the special 

 abundance of " Pilose " forms which is not suggested by the results of 

 previous workers. He distinguishes the forms restricted to Sphagnum 

 from those on drier mosses. 



Studies on Monera.§ — ^A. Schepotieff has re-investigated some of 

 HaeckeFs Monera, such as Protomyxa aurantiaca Hkl. and Protogenes 

 primordialis Hkl. He finds that the latter is a multinucleate reticulate 

 Rhizopod with alternation of generations ; and P. roseus Trinch. is a 

 Vampyrellid. Similarly, Aletium pyriforme Trinch . is one of the 

 Lobosa, Protomyxa aurantiaca one of the Rhizopoda reticulosa nuda, 

 Myxastrum radians Hkl. one of the Heliozoa. All Haeckel's Monera 

 have either a nucleus or several nuclei at some stage or other. There 

 are no Monera. There are no simple Protists without nucleoplasm. 



Cytoplasm of Epiclintes ambiguus.|| — E. Faure-Fremiet describes 

 the peculiar cytoplasm of this Heterotrichous Infusorian from salt 

 marshes. It is extraordinarily fragile, and difluesces on slight altera- 

 tions of its medium. Strong alcohol does not fix it, but provokes 

 dissolution, leaving only the nucleus, the mitochondrial granules, and 

 alimentary remains. From other reactions it is concluded that the bulk 

 of the cytoplasm of this Infusorian is analogous to lecithin. 



New Herpetomonad in Louse. f — H. B. Fantham describes Herpeto- 

 monas 2^ediculi sp. n., a parasite in the alimentary tract of Pediculus 

 vestimenti, the human body louse. It spreads from louse to louse by 

 the contaminative method, cysts of the parasite being swallowed by 

 the insect. The parasite exhibits three well-marked developmental 

 phases, united by a continuous series of intermediate forms : (1) the 



* Centralbl. Bakt. Parasitenk., Ixxii. (1912) pp. 589-605 (14 figs.), 

 t Rev. Suisse Zool., xx. (1912) pp. 1-29 (2 pis.). 

 i Ann. Scot. Nat. Hist. (1911) pp. 226-32. 

 § Zool. Jahrb., xxxii. (1911) pp. 867-400 (2 pis.). 

 il Bull. Soc. Zool. France, xxxvi. (1912) p. 214. 

 ^ Proc. Roy. Soc, Series B, Ixxxiv. (1912) pp. 505-17 (1 pi.), 



z 2 



