522 POLYZOA. 
taken from Bass’s Straits, at a depth of 
forty-five fathoms. As a general rule, 
however, the Polyzoa prefer the shal- 
lower waters, and are most commonly 
found a little below low-water mark. 
Fig. C is another species belonging 
to the same genus, and is remarkable 
for the long pointed spines that project 
from the margin, like a pair of cow’s 
horns. In allusion to this peculiarity it 
is called Catentcella cornuta. 
At Fig. D is shown another curious 
polyzoon, termed Calpidium ornatum, 
also found in Bass’s Straits, at the same 
depth as the preceding species. A magnified figure is given in order to 
show the singular method of its construction. 
An example of the typical genus of this family is given at Fig. E, where 
the Sadicornaria farciminoides is represented of the natural size. 
WE now arrive at another family, the Cellularidze, where the general shape 
resembles that of the preceding family, but the cells, instead of being arranged 
round an imaginary axis, and so forming cylindrical branches, are arranged 
on the same plane. Fig. F is a magnified example of this family, the 
Cellularia Peachi so called in honour of the eminent naturalist, Mr. Peach. 
At Fig. G is shown the mouth of a single cell, belonging to the genus 
Menipea, found in Terra del Fuego, and termed from its habitat, Wenipea 
Fuguensts. The object of giving this example is to show the curious “ oper- 
culum” which closes or rather guards the mouth of the cell, and in this 
genus is in the form of a simple spike. This species is found at low-water. 
EVERYONE who has walked along the seashore must have observed the 
pretty leaf-like Sea Mats strewn on the beach, and admired the wonderful 
regularity of their structure, perceptible to the naked eye; but when 
magnified, even by a pocket lens, their beauty increases in proportion to the 
power employed, and the marvellous arrangement of the cells and the orderly 
system in which they are placed are almost beyond belief. Beautiful, how- 
ever, as they are in this state, they are but the dead and lifeless habitations 
of the creatures who built the wondrous cells, and the only method of 
: we i 
SAMA 
Hi 
. 
i 
Hy Ls 
i) 
A. Flustra foliacea (Sea Mat.) 
B. Flustra Jolacea (magni fied.) 
