3 Pfot,' 
PROTOZOA. 
2. Fraipont, T. Kecherches eur les Acin^tiniens de la c6te d’Ostende. 
Bull. Ac. Belg. (2) xliv. p. 770, pis. i. & ii., xlv. pp, 247, 287, A 475 
pis. iii., XV., V., & vi. 
3. Grimm, O. A. Sur Lehre von den einfachsten Thieren, (St. Peters- 
burg, Russian). Cited from JB. Anat. Physiol, vii. ii. p. 8. 
4. Mereschkowsky, 0. von. Studien iiber Protozoen des nordlichen 
Russland. Arch. mikr. Anat. xvi. p. 163, pis. x. & xi. 
A list of the marine Infusoria of Northern Russia given, at p. 216, 
also tables of comparison with the RMzopoda and Monads, and with the 
freshwater and marine Infusoria of Norway. 
GenerAj Species, &c., referred to. 
Vorticella microstoma and V. campanula^ an Endosphcsra and an un- 
known form parasitic in the two respectively, are described, by J. van 
Rees, Z. wiss. Zool. xxxi. p. 474. 
Cothurnia nodosa. Clap. & Lachm., (4) p. 164, pi. x. figs. 1-5, is widely 
distributed in the White Sea. The specimens have the swelling placed 
inside the shell. Varieties figured ; var. longipes, Meresch., among them. 
Tintinnus inquilinus, (4) pi. x. fig. 12, White Sea. 
Oxytricha fallax, its parasite and its development described and figured 
by Van Rees, Z. wiss. Zool. xxxi. p. 475. 
Stylonychia mytilus, (4) pi. x. fig. 7, White Sea. 
Epidinthes auricularis, Clap. & Lachm., (4) p. 164, pi. x. fig. 16, re- 
described, White Sea. Urostyla weissei, Stein, var. n., p. 166, White Sea. 
Stentor cceruleuSf Zool. Anz. i. p. 390. Is provided with small amoeboid 
processes at the posterior end when it is about to settle on any object, 
according to A. Gruber. 
Folycricus schwartzii^ Biitschli (3), is a Turbellarian. 
Coleps antice-nudus and C. po^tice-mdus = C. hirtus, and are the pro- 
ducts of fission (16). The shield is formed in the ectoplasma. 
Nassula and Buraaria (3). The “ cells ’* of His are merely organisms 
taken in as food. 
Acinetince, (2) p. 475, must all have a skeletal membrane. The struc- 
tures and functions of the group are discussed one by one. The 8 genera 
of Claparede & Lachmann should be raised to the rank of families and 
ITrnula added as a 9th family. According to a tree of affinity, the Tri- 
chophrydcB, Fraipont, should be at the bottom, the Urnulidce, Fraipont 
and Acinetidce, Fraipont, at the top of the scale. The group probably has 
sprung from the Infusoria ciliata^ 
Acineta mystacina^ Ehrb., var. n. longipes, (4) p, 177, pi. x. fig. 26, St. 
Petersburg and Weliky-Ustjug. 
Podophrya cylindrical Perty. (4) p. 172, pi. xi. fig, 16, described ; St. 
Petersburg. 
New Species. 
Peritricha. 
Vorticella pyrum, Mereschkowsky (4), p. 156, pi. x. figs. 31 & 32, Solo- 
wetzky Is. 
