4 Prot . 
pi;o'iozoA. 
New Genera and Species. 
Peritricha. 
Tintinnus semiciliatus^ Sterki, Z. wiss. Zool. xxxii. p. 460, pi. xxviii. 
figs. 6-9, Schleitheim, Switzerland. A tongue-like organ is seen to move 
in different directions in its mouth. The hinder end has no cilia. The 
oral cilia are flattened and membranous. Cf. also translation of the 
paper, Ann. N. H. (5) iv. p. 290. 
Cothurnia socialis, Gruber, (2) p. 457, pi. xxvi. figs. 23-27, in sea- water 
from Frankfort. In colonies, forming networks. An operculum springs 
from the peristome. C. operculata, id. 1. c. p. 432, pi. xxvi. figs. 29-33, 
sea-water from Frankfort. An operculum is attached to the tube. 
Cothurnia corrugala, Davis, J. R. Micr. Soc. ii. p. 653, pi. xx., Brighton 
Aquarium. The upper end bears two forked setae. It is sensitive to 
light. 
Trichodina scorpcencEy (3) p. 661, figs. 31-36. On the branchiae of various 
species of fish of the genera Scorpccna and Trigla, on the French coast. 
Toothed basal wheel described. 
Hypotricha. 
Stichotricha socialis^ Gruber, (2) p. 440, pi. xxv., mud from Vienna. 
Forms a dichotomously branching tube, and is readily induced to abandon 
it and form a fresh one. The material of the tube always remains slightly 
viscous. There is a row of very fine cilia within the peristome. 
Sparotricha, Entz, (1) ii. p. 239, iii. p. 53. Differs from Stichotricha in 
having the peristomial cilia arranged as a continuous banner-like series, 
in the irregularity of arrangement of the other cilia, and in not rapidly 
changing its form ; from Uroleptas^ chiefly in the absence of the frontal 
hooks. <yea;i7/(/€r, Entz, (1) pi. ix. figs. 10 & 11, in saltpan, Hungary. 
Ervilia salina, Entz, (1) ii. p. 237, iii. p. 52, pi. ix. figs. 12-14. 
Oxytricha tabicola, (2) p. 450, pi. xxvi. figs. 11 & 12, mud from Vienna. 
Inhabits short tubes. 
Holotriciia. 
Maryna, Gruber, (2) p. 451. M. socialis^ Gruber, 1. c. pi. xxvi. figs. 
13-17, mud from Vienna. Body cup-shaped, cylindrical, one side cleft 
longitudinally ; from the middle rises a funnel-shaped mass, cleft in the 
same direction as the body-mass. The latter is fringed with fine cilia, 
the central funnel with long bristles. Forms branching tubes, undergoes 
fission and encystation. 
Tillina, id. 1. c. p. 454. T. ?nagna, id. 1. c. pi xxvi. figs. 18-22, mud 
from Vienna. Length, y-mm. Bean-shaped, with strong ventral concavity, 
containing the mouth-opening ; a posterior process contains the contractile 
vacuole ; oesophagus ciliated, with two flexures. Dichotomous fission 
results in formation of four individuals. 
Litonotus grandisy Entz, (1) ii. p. 220, iii, p. 34, pi. viii. figs. 1 & 2, in 
saltpans, Hungary. Its contractile powers reside in the transparent part 
of the protoplasm. 
Opalina discoglossi. Everts, Tijdschr. Nederl. Dierk. Ver, iv. p. 93, 
