6 Pvot. 
PROTOZOA. 
families, Torquatellidce, Actinoholidce. He transfers many forms to 
Heterotriclia [see below]. 
Tintinnodea, (8) p. 246. Family defined and provisionally arranged by 
Fol. See Kent, (10) Heterotricha. 
Tintinmis, (8) p. 247. List of known species. 
T. campanula, helix, annulatus, ventricosus, referred by Fol (8) to 
Coniocylis, g.n., to which probably belongs Tintinnopsis, Stein. T.jluvi- 
atilis is removed from the genus. 
The cilia of the disk of the Tintinnodea are described by Fol, 1. c., as 
arranged in numerous parallel lines extending from the margin of the 
peristome, some — the shortest — to the mouth itself, the remainder to 
within a certain distance from the mouth ; the whole form about twenty 
spiral lines, each lying opposite to one of the marginal teeth of the 
peristome. The test is composed of chitin. Conjugation occurs by 
union of individuals, at a point near the mouths. 
Dictyocysta, Ehrenberg, (8) pp. 245 & 247. Restricted by Fol. D. 
mitra, Hiickel, = D. elegans, Ehrenberg. D. cassis is no Dictyocysta, 
pp. 245 & 246, but = Cyttarocylis, g. n. It is redescribed and figured, 
pi. xvii. fig. 6. 
Cothurnia socialis, Gruber, (13) p. 210, pi. xii. fig. 3, from White Sea. 
Licnophora cohni. A European form now recorded from Chesapeake 
River, U. S., by J. A. Ryder, P. Ac. Philad. 1881, p. 443. 
Vorticella. J. Limuacii, “ Kilka awag e zbiomiku kurczliwym wircgyka 
{Vorticella),^' [= Einige Bemerkungen fiber den contractilen Behalter von 
Vorticellay^ Kosmos, Z. poln. naturf. Ges. Kopernicus, Lemberg : 1880, 
p. 213 [cited from Zool. Anz.] 
Vaginicola pancerii, Ninni, (11) p. 446. Referred to Cothurnia by 
Maggi, and described from branchiae of Astacus, on which occur also 
C. sieboldi, curva, and astaci, Stein. 
Trichodina mitra, Siebold, is the name assigned by F. Vejdovsky, 
SB. bohm. Ges. 1881, p. 115, to a form figured without name from a 
Planarian by Hallez in his recent work on Turhellaria, pi. v. fig. 23. 
Trichodina steini. Clap. & Lachm., is fully described by Vejdovsky, 1. c. 
p. 116, pi., from Planaria gonocephala. The lower end is invested by a stout 
cuticle, in which the grasping-hooks are fastened ; the nucleus is horse- 
shoe shaped, and very long. 
Trichodina pediculus recorded on Gastrosteus, N. H. [should be W. H.] 
Poole, Nature, xxiv. p. 485 ; on larva of Triton cristatus, by W. S. Kent, 
tom. cit. p. 557. 
Hypotricha. 
Euplotes longipes. Clap. & Lachm. (15). Described by Rees. 
Chilodon cucullus, (9) p. 543, pi. x. figs. 19-26. Swallows Oscillatoria 
by extending the oesophagus, which grasps the filament. The way in 
which this leaves the body, shows that no distinction exists between the 
main mass of the body and its cortical layer. 
Gyrocyrus, Stein, described by Gruber '(9) as Calcaria contorta, g. & 
sp. nn., p. 549, pi. x. figs. 29 & 30. The latter names are withdrawn in 
note, p. 552. 
