NATURAL HISTORY MISCELLANY. 657 
tylis flavicans slightly magnified ; Fig. 114, the same magnified 250 
diameters). 
A smaller species, Vorticella nebulifera, is to be found attached 
— 
to the bodies of some Entomostraca, as Cyclops quadricornis, an 
on Lynceus. Another species (Carchesium 
polypinum) is also found attached to these 
creatures. We have a specimen of Cyclops, 
mounted as a microscopic object, having Vor- 
ticella nebulifera attached to the back of the 
crustacean. The presence of the Vorticella 
on the slide was accidental, as the object 
was intended to be Volvox globator (Fig. 115) 
Voleoz globator. = § only. It evidently PA 
got in, either attached in some way to n 
some of the Confervæ, or from the 
water. 
The stalks in Carchesium are not 
retractile; the body, however has the 
power of closing up by muscular ac- 
tion. These we have not found in 
numbers in our aquarium, but in the 
ponds near the city they are to be met 
with in abundance. 
Another beautiful creature — the 
Blue Stentor (Stentor cæruleus)—has 
attached itself to a little bit of weed ; 
its beautiful crown of cilia is expand- 
ed, and moves rapidly, creating quite 
a small whirlpool, into which the un- 
fortunate monads are drawn and 
engulphed into its stomach. It is of a 
beautiful blue colour, and is found in 
great abundance at times on the tops 
of ponds, which look then as if cover- 
ed with coal dust. (Fig. 116 repre- 
sents Stentor polymorphus Ehr). —= pang 
On taking another drop of water 
from the aquarium, with more of the vegetable matter, we observe 
other and different creatures, resembling snakes twisting and en- 
twining each other in their folds; these are called Lurcos or Glut- 
tons. They are well named, for they are very voracious, feeding 
