INFUSORIA. 
Vrot. 5 
and Algiers ; the anatomy of the group is somewhat fully discussed, and 
the various opinions on this subject very carefully weighed. 
13. Mereschkowsky, 0. On some now or little-known Infusoria. 
Ann. N. H. (5) vii. p. 209, pi. xii. 
14. Parona, C. Delle Aciuetine in genorale od in particolare di una 
nuova forma {Acineta dihdalteria^n.^T^.). Boll, scient. ii. [1880] p. 79, 
fig. \_Cf. also Arch. sci. nat. 1881, p. 181, and Ann. N. H. (6) vii. 
p. 279.] 
Gives a review of the chief points hitherto discovered as to the anatomy 
and physiology of the Acinetidai. 
16. Rees, J. v. Zur Keuntniss der Bewimperung der Hypotrichen 
Infusorien, nach Beobachtungen an Stylojdotes grandis, n. sp., und 
Euploles longipes, Clap,, Lachm,, 1 pi. Amsterdam : 1881. Cited 
from Niederl. Arch. Zool. v. p. xxviii. 
S. 0. Glason. The Study of Infusoria. Am. Micr. J. ii. p. 109. 
C. M. Yorce. Is it Tintinnus? Tom. cit. p. 223. 
[Not seen by the Recorder.] 
Faun^j see General Subject. 
Classification. 
Affinities of the Infusoria Ciliata discussed by Kent, (10) p. 473. 
The general parallelism between the differentiation of organs and func- 
tions which is found in them on the one hand, and in the Metazoa on the 
other, is dwelt upon. A hypothetical phylogeny of the different groups 
of these animals is constructed, chiefly by comparing some leading Infu- 
sorian types with larval forms of different Metazoa, e.g., Opalina with 
the Coelenterate jpZanwZa ; Paramoeciuni with aproctous larva of Turbel- 
larians ; Mclodinum with the Nemertian larva Cephalothrix ; the Peritro- 
chous form Teloirochidium wdth a similar Annelid larva ; Didiniwn with 
a 4-banded Echinoderm larva ; Vorticella with a larval Polyzoon. Kent 
also appeals to the multinucleate condition of Opalina as evidence in 
favour of an evolution of multicellular from unicellular types. 
Genera, Species, &c.. Referred to. 
The families, genera, and species of the orders Holotricha, Heterotricha, 
and part of Feritricha are characterized and described by Kent, (10) 
pp. 482-720, pis. xxvi.-xl. Of the genera and species, only those described 
as new can be noticed below 
Peritriciia. 
Kent (10) recognizes 8 families in this Order, viz., Dictyocystidce, 
Hackel ; Halteriidce, Clap. & Lachmann ; Urceolariidce, Stein ; Ophryo- 
scolecidcB, Stein; VorticelUdce, Ehrenberg, and the newly-established 
