510 
PROTOZOA. 
nucleus of some individuals, while in the nucleus of others 
rounded bodies were observed always increasing in number and 
finally in size. The nucleolus and nucleus therefore do not here 
stand to each other in the relation of male and female repro- 
ductive organs united in the same individual, as in other Infu- 
soria. In those creatures {Epistylis) a triple, perhaps alternating 
mode of generation takes place, viz. : — 1, longitudinal division ; 
2, bud conjugation and embryo-formation ; 3, sexual generation 
by separate sexes. 
Stentor harrettiy sp. nov., Barrett [!] (M. Micr. J. April 1870). 
Mr. J. G. Tatem describes {loc. cit. p. 194) monstrosities of Traehelias anas 
and Chilodon cucullulus, in which the ^‘lip” or ^‘brow” is inordinately 
prolonged. Also a variety of Vorticella convallaria, which he terms var. 
monilatay the body of the animal being ornamented by large transparent 
refractive beads arranged in equidistant rows. In the opinion that the 
transverse striations on the body of V. convallaria are, like the markings of 
a Pleurosigma, composed of closely dotted minute bead-like elevations of the 
surface, he supposes that these are here diminished in number but exaggerated 
in size. Mr. Tatem also describes, in the same journal for December 1870, a 
peculiar form of Stylonyckia pustMlata, in which the normally rounded pos- 
terior end of the body is prolonged into an extensile process or tail, termi- 
nating in a palmate expansion fringed with spines. 
Quennerstedt (Act. Lund. 1867-68) describes the following marine In- 
fusoria as new, from the neighbourhood of Warberg, Sweden : — 
Opalina my till (p. 4), Loxophyllum setigei'um (p. 6), Lacrymaria versatilis 
(p. 10), Lagynus, g. n. (type hacrymaria elegans, Engelmann), L. Icevis 
(p. 12), Trachelocerca tenuicollis (p. 14), Chcenea (g. n.) vorax (p. 15), Para- 
mecium cucullio (p. 18), Metopides contorta (p. 23), Aspidisca sedigitata 
(p. 30), Stylonyckia similis (p, 38), Mitra radiosa (p. 41). 
The same author describes (Act, Lund, 1869-70) the following new species 
from Wisby, Isle of Gothland : — 
Holophrya tarda (p, 8), Panophrys fusca (p. 9), Lembus pusillus (p. 16), 
Aspidisca hexeris (p, 19), Oxytricha velox (p. 20), Trichodina haltica (p. 24). 
Of his list of 30 species of Infusoria from the sea at Gothland, Quenner- 
stedt remarks that only about a third were hitherto known as exclusively 
belonging to salt water. Whether the 6 described as new are to be consi- 
dered peculiarly marine cannot bo settled as long as they are only known 
from that one spot amid such a preponderance of fresh- and brackish-water 
forms. 
The following are the new species of Infusoria described by Wrzesniowski 
(/. c.) from the neighbourhood of Warsaw : — 
Opereularia cylindrata (/. c. p. 468), Cothurnia pusilla (p. 471), Oxytricha 
eeruginosa (p. 471), O. macrostyla (p. 474), Stichotricha aculeata (p. 477), 
Urostyla Jlavicans (p. 480), if not identical with Oxytricha urostyla, Clap, 
and Lachm., Euplotes patella, var. eurystomus (p, 483), Trochilia polonica 
(p. 486). 
Litonotus, g. n., Wrzesniowski (/. c.). Dorsal and ventral aspects differen- 
tiated, only the ventral set with short thin cilia. Body surrounded by a 
hyaline margin without granules, with aneck-like elongation, hyaline, flexible, 
