17 ProL 
PROTOZOA. 
Parcellaj Grimm (16). P. lamprosa^ Grimm, 1. c, Differs from single 
individuals of Magosphcera planula by possessing one flagellum instead of 
the cilia. Forms colonies of 3 to 40 individuals, which lose the flagellum 
and assume an amcnboid form on dispersion of colony ; these encyst and 
break up internally by imperfect fission, forming a morula, each segment 
acquiring a flagellum and vacuole ; fission proceeds to production of 100 
segments after loss of cyst. 
Synura volvox^ Grimm (16), = Parcella ocellata^ Grimm, sp. n. [I] 
Protamosba grimmi^ Mereschkowsky (7), p. 214, pi. xi. figs. 36 & 37, 
White Sea. 
Anatomy and Physiology. 
Uvellina^ Meresch. (7), p. 178, to be regarded as a living Morula^ or tran- 
sition from uni- to poly- cellular organisms. But segmentation of Monera 
differs essentially from that of an ovum in its being carried out at one 
stroke. 
Division Cylicomastiges (15), p. 220, compared with the Sponges in 
the possession of “ collars ” to the ciliated «3ells. 
Structure of collar-bearing Monads reviewed by W. S. Kent, Ann. 
N. H. (6) i. p. 1 ; the collar shows circulating protoplasmic streams which 
bring food into the calyx. 
A Flagellate Infusorian described and figured from the blood of the 
tree-frog, Hyla, by J. D. Schmidt; J. R. Micr. Soc. i. p. 108, pi. i. fig. 68. 
GREGAKINIDA. 
Gabriel, J. B. schles. Ges. Iv. p. 68, states that isolated pseudo-navi- 
cella-cysts from Lumbricine Worms when observed for some time showed 
a gradual thinning of their coats, and eventually burst. The pseudo- 
navicellae exhibit minute viscous drops at both poles. Isolated ones show 
contraction of their protoplasm to a glob ular^, and then an oval form ; in 
the latter case it is enveloped by a clear layer. 
Generalities, Cell Theory, Phylogeny, &c. 
The following may be specially noted ; — 
Forel, D. a. Faunistische Studien in der Susswasserseen der Schweiz. 
Z. wiss. Zool. XXX. suppl. p. 384. 
Distinguishes a (i.) littoral^ (ii.) pelagic^ and (iii.) deep region in these 
lakes. 
(i.) 10-15 metres deep. Fauna well known. 
(ii.) From littoral zone to the middle, and almost to the bottom, 
(iii.) The bottom and the layer immediately above it ; depth from 
15 metres near edge to 334 at deepest part. 
Most freshwater types represented, except Naiades and Spongiida. Of 
Protozoa in Lake of Geneva, Ppistylis^ Vorticella^ Acineta, Rhizopoda^ 
A moihoidea. 
(Lists also given of the chief forms of other groups and of the flora. 
