1897.] Zoology. ? 535 
atic spindle of Equisetum (Osterhout), nuclear division in the pollen- 
mother-cells of certain Dicotyledons and Monocotyledons (Mottier), 
nuclear division in the pollen-mother-cells of Hemerocallis fulva (Juel), 
nuclear division in Chara fragilis (Debski), nuclear division and free- 
cell-formation in asci (Harper), nuclear division and fertilization in 
Basidiobolus ranarum (Fairchild), nuclear- and cell-division in the 
Sphacelariacee (Swingle), nuclear division and fertilization in Fucus 
(Strasburger), cytoplasm-structure and nuclear- and cell-division 
(Strasburger), fertilization (Strasburger). It is encouraging to observe 
the names of the American botanists, Osterhout, Mottier, Harper, Fair- 
child and Swingle in this list—Cuar.es E. Bessey 
ZOOLOGY. 
Stichospira paradoxa.—Nov. gen. and sp. of Ciliata Infusoria 
with plate—Body, when extended, much elongated, consisting of a 
bulbous posterior part, a long, slender neck, and an anterior part with 
the peristome and a long corkscrew-like anterior extension curved dor- 
salward and to the right, bearing the prolongated adoral zone of cilia. 
When contracted, it is obovoid with the anterior end rather pointed. 
The substance of the body is slightly yellow. One contractile vacuole 
is situated in front of the peristome, somewhat to the left and dorsal- 
ward, another near the posterior end of the body. Two almost globu- 
lar endoplasts were seen not very distinctly. In the posterior part 
there are, as a rule, numerous food-balls and small, strongly-refracting 
particles. On the right margin of the rather deeply excavated peris- 
tome is a broad, thin, hyaline membrane, standing out perpendicularly, 
ventralward ; it appears to be rather stiff and is undulating very 
slightly (u m in fig. 2.). The anus is in the anterior part, to the left 
of the peristome, and constant. Of cilia there are the following :— 
1, The adoral zone with about 30 to 50 transverse series of fine, long 
cilia from the peristome-angle to the anterior end of the processus, of 
which this zone is occupying the outer side. 
2. One single, stronger, shorter cilium at the anterior end of the 
zone, and sometimes a smaller one in front of it. 
3. A series of about 20 “ paroral” cilia just inside of the membrane 
on the right peristome-margin ; they are long, bristle-like, crowded, 
appearing stiff, but slightly vibrating, longest in the middle of the 
series, their ends forming a regular curve. 
