PROTOZOA. 
641 
I, Halotricha. 
Lemhus^ g. n., p. 290. Body milk-white or yellowish, very elastic and 
flexible, not retractile, with fine wavy rings, surrounded with transverse rows 
of long cilia, much crowded together on the sides, linear, lance-shaped, 
attenuated in front, neck-like, with a row of long recurved cilia extending 
from the oral opening to the middle of the body ; from the mouth extends a 
long membranous velum, which, altliough not moveable at will, is densely 
furnished with cilia, which can be protruded ; contractile vesicles one or 
more in the posterior portion of the body ; nucleus (? several small ones). 
L, veHfcr, sp. n., p. 270, figs, 12-18. 
Anoplirys, g. n. p. 290. Body rigid, with fine transverse and longitudinal 
linos, clad with cilia ; a central nucleus and terminal contractile vesicle \ 
oral opening on the side, with a series of rotating preoral cilia the portion 
in advance of the mouth presents the form of a pointed flexible proboscis. A. 
sarcophaga^ sp.n. (p. 273), fig. 61 a-c. Leucoplirys carneum, Ehrb., is referred 
to this genus. 
Ilelieostoma, g. n., p. 290. Body pale grey or quite colourless, elastic, 
finely striated both transversely and longitudinally, surrounded with cilia 
set in long rows, placed closely together on the back ; oblong, pointed 
towards the apex, obtusely rounded off posteriorly ; an irregular oral opening, 
conducting into a membranous oesophagus, extending into the middle of the 
body, the first portion of which is straight, and the latter portion bends like 
a bishop’s crozier ; contractile vesicle towards the posterior portion of the 
body j nucleus central. H. ohlongiim, sp. n., p. 277, figs. 19-23. 
Metacystisj g. n., p. 297. Body rigid, colourless, with fine wavy lines, 
easily obliterated, filled with small dark bodies j round or cylindrical in 
shape ; with fine short cilia ; the narrow nnterior extremity furnished with a 
thick border of cilia ; the posterior end contains a more or less conspicuous, 
transparent vesicle, which shines like a fat-globule (sarcode ?). M. trimcata, 
sp. n., p. 266, figs. 39, 40. 
Placus, g. n., p. 297. Body rigid, loricated ; lorica yellowish, indentated 
with wavy furrows crossing each other and running in parallel bundles, thickly 
beset, with cilia on the back ; oblong, with a short, circular oral opening near 
the anterior extremity placed sideways ; a contractile vesicle near the pos- 
terior extremity j nucleus one, central. P. striatus, sp. n., p. 208, figs. 6, 7. 
Trachelocerca phcanicoptcrus, sp.n., p. 262, figs. 1-3. 
Nassiila microstoma., sp. n., p. 267, figs. 4-6. 
Loxophyllum rostratum, sp. n., p. 280, figs. 8-11. 
Colpoda pigerrima, sp. n., p. 274, fig. 62. 
Tleuronema (^Alyscuni) citrullus, sp. n., p. 276, fig. 54. 
Uronema marinum, Duj., emend., p. 275, fig. 63. 
Amphileptus gutta, sp. n., p. 209, fig. 60. 
II. Hypotricha. 
Actinotricha, g. n., p. 299. Body colourless, oblong, somewhat flexible and 
retractile, rounded at both ends, flat, with a beak-like lip situated ventrally 
on the front anterior edge, bearing five long, broad spines, in old specimens 
usually divergent and immoveable ; peristome short, and set on its inner side 
with long, hooked cilia j two rows of ventral bristles, which at the posterior 
portion protrude over the edge ; tail-bristles long, broad, often bifid. A. 
saltans, sp. n., p. 283, figs. 24-26. 
I860. [voL. III.] 2 T 
