"^'iSi!^,i:t" ^MMm in the Uni.

INFUSORIA. 511
and retractile; mouth at base of neck on left margin; staff-shaped bodies
present on left margin of neck. L. folium, Wrzes., = DUeptus folium, Duj.,
and Loxophyllum fasciola, Clap. & Lachm. pi.; L. fasciola, Wrzes., = AmphUeptus
fasciola, Ehr., and Loxophyllum fasciola, Clap. & Lachm. pt.; L.
varsaviensis, sp. nov., Wrzes. (I. c. p. 502). Subgenus Hemiophrys, Wrzes.
(I. e.). The granules and particles of nutriment extend themselves into the
margins of the body; and the staff-shaped bodies are irregularly distributed
on the dorsal and ventral surfaces. Litonotus (Hemiophrys) diaphanus, sp.
nov. (?), Wrzes. (I. c. p. 503).
Microthorax pusillus, Engelmann. Wrzesniowski's examples from the
neighbourhood of Warsaw differ from Engelmann's in two insignificant peculiarities
only. In Engelmann's the body is more pointed in front, and on the
ventral surface are three longitudinal grooves reaching only to the middle of
the body.
Condylostoma (stagnate, sp. nov., Wrzes., if really different from C. patens,
Duj.). This is a freshwater Condylostoma, the genus having hitherto been
found only in salt water. It differs from C. patens in some points; but the
author does not venture to set up a new species on the strength of a single
example.
Dileptus gigas, Carus. Wrzesniowski (I. c.) describes two local varieties
from the neighbourhood of Warsaw—D. gigas grojecensis and D. gigas varsaviensis.
Opalina. Mr. E. Ray Lankester (loc. cit.) describes the general structure
and especially the contractile vesicles of Opalina naidos, Duj. According to
the structure of their integument, nucleus, and contractile vesicles the Opalinee
are to be considered true Infusoria, and not stages in the development
of worms; but Mr. Lankester considers the organisms called by M. Claparede
Pachydermon to be annelidan spermatophores.
GIGLIOLI ( I. c. p. 491) describes two new species of Noctiluca: the first,
JV! omoyenea, Gigl, from the Malay archipelago and Chinese seas, sheds a
greenish light, wants the internal protoplasmic ramifications, and has its
filament proportionally much shorter; the second, N. pacifica, Gigl, from
the Pacific coasts of Australia and South America, shedding a whitish light,
is larger than N miliaris, and has, like it, the protoplasmic ramifications, but
the filament is proportionaUy much longer and larger.
CIENKOWSKY'S researches (I. c.) lead him to the conclusion that the flagellate
genera Chlamydomonas, Euglena, Cruptomonas, Vacuolavia, are naturally
associated with the Palmellacea.
Vacuolaria virescens, gen. et sp. nov., Cienk. (I. c. p. 426), from the Saxon
Switzerland, possesses an oval body of naked protoplasm, coloured greenish
by chlorophyll-granules, at one end two long flagella, likewise a nucleus,
and between it and the attachment of the flagella 1-3 pulsating spaces.
Their "zoospores" encase themselves in a covering of jelly, within which
they lose their flagella, become spheroidal and multiply by division; there is,
lastly, a condition of rest or encystment, in which the nucleus is not visible.
Colacium stentorinum, Ehr., usually also reckoned a flagellate infusorian,
agrees also in its course of development mainly with Palmellacea.
Mimas consociata, Fresenius, is referred by Cienkowsky to the genus Phalansterium,
along with P. intestinum, sp. nov., Cienk. (I. c. p. 429). Both are
numerous in Germany and Northern Russia. The development of these