666 Notes on a New Infusorian. (Jey, 
now? If they and the systematist should have a temporary es- 4 
counter, what would he do with them? Would each bea fre — 
water Lembus ? Such questions give them no trouble, They — 
once proceed to form their ciliary appendages by splitting = 
their membrane to suit. The fringes unite to form the membrane 
the membrane divides to form the fringes, the thick edge the 
going into the thickened extremities of the adoral comb. In tw 
hours, more or less, the sweet-water Lembus is a sweet-watet 
Ctedoctema, of which the following may be taken as a descrip 
tion: 
Ctedoctema, gen. nov. (Greek, £/edon, a comb ; Atema, a possession 
free swimming, more or less ovate, persistent in shape, entirely aan 
verse to those of the cuticular surface ; oral aperture ventral, located at the postens 
va in length toward the oral aperture, which they surround, : 
extremities atileiodty thickened; several long, setose hairs projecting from Se 
posterior extremity of the body, usually a single one being distally curved; comma 
tile vesicle single, posteriorly placed; trichocysts large and numerous, 
ine; ruptos, concealed). —Bo#t : 
ing to an obtuse anterior 39h 
breadth, a hemispherical sarcode bubble usually present on 
eral border ; cuticular cilia long, fine, setose, a single postero- m picni s Š i 
distally curved ; oral aperture ciliated, remote from the anterior apex, 4 
posterior termination of a shallow, narrowly ovate, ciliated, adoral groove part ng 7 
longitudinally traversing three-fourths of the ventral surface, and bearing o 
hand margin a flexible comb-like appendage composed of large, coarse, theoralapetst. 
cilia, thickened distally and diminishing in length as they sre margins 
which they surround ; the adoral groove also bearing near its left iad long, : 
of long, fine, vibratile hairs, and throughout its entire le a : 
tile cilia, somewhat fascicled anteriorly and shortening as they border; poto 
contractile vesicle single, sub-terminally located near the pi e 
ovate, peera placed in the anterior body half; trichocysts larg, distally two or mot 
rently prismatic, tapering to an obtuse point, an and bearing 4 ich Leon. Leng? 
minute, radiating, linear processes. Habitat: Fresh water, | 
inch, bby 
The animal was studied with a homogeneous ‘ener 
Herbert Spencer, N. A. 1.35, and a homogeno i 
Bausch and Lomb, N. A. 1.43, two objectives 
works of art. 
