FLAGELLATA, MONADS. 
Prot . 19 
Vampyrella lateritia, (8) p. 263, pi. xlv. figs. 10-16. Observed to emit 
rays with pin-like heads, like those of Acineta. 
Diplophrys archeri ? (8) p. 256, pi. xlv. figs. 7 & 8, in N. America. 
Pelomyxa palustris stated by Engelmann, in a paper in Arch, gea, 
Phys. xix. p. 1 (cited from J. R. Micr. Soc. ii. p. 591), to become more 
lively when placed in the dark, and to contract when suddenly brought 
into the light. 
Anisonema acinus, Biitschli : its secreted granules observed by W- 
Schmankewitsch, Zool. Anz. ii. p. 93, to become green under action of 
sunlight, and often to increase in size. These granules in this and allied 
forms are homologous with the stationary gonidia of Chlorococcus. The 
green colour is lost on re-oxygenation of the water, and its removal to 
a dark place. A delicate mycelium, afterwards dividing into short pieces, 
developed from a colourless monad, was probably a stage in the history 
of this species. It may also, id. tom. cit. p. 113, under certain condi- 
tions, take the form of fungus-spores or embryos of an Alga. 
Chlamidomonas developed, id. 1. c. p. 11, from Amcchm, derived from 
spores of Aspergillus. 
Euglena viridis, Sci. Goss. 1879, p. 256, observed to throw off its 
flagellum ; also, pp. 136, 184, & 231, the flagellum is bulbed at the end. 
Euglena viridis, figured, from Australia, Q. J. Micr. Soc. Victoria, i. 
p. 18, pi. i. fig. 16, by 0. M. Maplestone ; also a Monad, an Astasia, &c. 
W. H. Ballinger reported in Sci. Goss. 1879, p. 276, as expressing 
himself against the animal nature of Bathybius. 
New Genera and Species. 
Protohathybius, Bessels, Die Amerikanische Nordpol-Expedition, p. 321. 
Differs from Bathybius in having no coccoliths ; 90-94 fath., near lat. 
790 4^/ 790 42 ' jN., long, about 70® 40' W. 
Peridinium stygium, Joseph, JB. schles. Ges. Ivi. p. 73, and Zool. Anz. 
ii. p. 115. In stalactite cave, Adelsberg, Carniola. Has three distinct 
stages, the earliest of which represents the genus. 
Gymnodinium, in the two latter stages sexual reproduction may take 
place. Conjugation does not lead to fusion of the two bodies; the nuclei 
reunite, and then again become separated. One or two new animals 
issue from each parent, and develop shells which are at first smooth. 
In another process, the whole of the parent cell may be resolved into 
germs. 
Chlamydomonas tumida, Schneider, Z. wise. Zool. xxx. suppl. p. 453, 
fig. 19. C. radiosa, id. 1. c. p. 463, fig. 18. Both have a minute refract- 
ing body lying on the eye-spot. 
A species belonging apparently to a new genus, but resembling in one 
condition Tetraboina dujardini, and in another Anihophysa muelleri, but 
possibly only a stage of some other species, is described by 0. Haller, Z. 
wiss. Zool. xxxiii. p. 394, attached to the hinder extremities of Amphipod 
and Caprellid Crustacea of Italian Seas. 
