440 Some New Infusoria. [ May, 
the right-hand side of the mouth, thus supplying that ever-ready 
mouth with food. On such occasions the surface cilia behind the 
position of the oral aperture are in only irregular and uncertain 
vibration, while those on the frontal border, including the curved 
fascicle, are in the most active motion, being only momentarily 
visible, the right-hand ciliary fringe, under an insufficient ampli- 
fication, then presenting the aspect of a single short seta, or a narrow 
lip, projecting from the posterior angle of the excavation. When 
the zodids have been for some time under the thin cover, they 
voluntarily leave the old zoocytium, swimming rapidly and occa- 
sionly settling on the slide to form a new and equally structure- 
less protective covering. If a-convenient collection of miscella- 
neous debris is accidentally encountered, the wandering infusorian 
often takes refuge beneath it, there gliding backward when threat- 
ened, as it did so conspicuously in its original home, the long 
anterior cilia then streaniing out at the front. 
Cyrtolophosis (kuptos, curved ; hogwats, wearing a crest), gen. nov.—Animal- 
cules ovate, persistent in shape, entirely ciliate, the adoral cilia differing from those 
of the general surface, the anterior extremity bearing a fascicle of long distally 
curved, vibratile hairs ; secreting and inhabiting a variously modified, mucilaginous, 
granular zodcytium, to which they are in no way attached and from which they may 
pass at will; oral aperture at the posterior extremity of an excavated, elongated 
groove, Tongia traversing the anterior part of the ventral surface, bearing on 
its right-hand’ margin a series of cirrose, adoral cilia; nucleus and contractile vesi- 
cle single, conspicuous; anal aperture postero-terminal. 
Cyrtolophosis mucicola, sp. nov.—Body ovate, two and one-half to three times as 
long as broad, both extremities rounded, narrowed anteriorly, the ventro-frontal bor- 
der obliquely truncate; anterior cilia longest, those of the Aey surface setose, the 
anteriorly placed fascicle of distally and downwardly curved cilia conspicuous; 
adoral depression extending from the frontal border for densi the length of the 
entire body; adoral cilia cirrose, curved, diminishing in length toward the oral aper- 
ture; contractile vesicle single, spherical, posteriorly placed near the oat -hand lat- 
` eral border; nucleus subspherical, subcentrally located. Length of body 3,5 to 
toss inch. Zodcytia solitary or variously united. Habitat: an infusion of dead 
leaves. Reproduction by transverse fission. 
Another infusorian, bearing a carapace and having the adoral 
fringe on the left-hand margin of the peristome, and therefore 
undoubtedly a member of the Euplotide, proved to be an unde- 
scribed species of the curious Euplotes, animalcules whose ven- 
tral styles are not only used for swimming but as ambulatory 
_ organs. They are often seen walking over the slide and among 
the masses of débris usually present, apparently swimming only 
when food is exhausted in that locality and they must journey 
