Mr. W. Clark on the recent Foraminifera. 167 
nute polypiferous constructors, which may be either compound 
or single animals. Cabinet specimens are almost always polished 
by attrition. 
This statement is, I believe, the true solution of the condi- 
tions of the only two Foraminifera about which doubts can 
exist as to the animal; all the rest, without exception, follow 
the type of the animals I have described above as to gene- 
ralities. I may add, that I have examined with the highest 
powers many of the Nodosaria striata, and have not detected a 
membranous animal ling, which better observers say they have 
seen. When there is a minute perforation at the side of the 
neck of the bulb, occasioned by a boring animal, in such, the 
chambers sometimes contain the remains of parasites and fine 
mud and sand that cause discoloration of the globules, which 
authors may have mistaken for parenchymatous matter. It is 
also possible that very minute parasites may enter at the stran- 
gulated necks when the stem is broken up, and locate themselves 
within, in like manner as in the Miliolide, which, I have stated 
above, are constantly inhabited by parasites of various species. 
Whatever doubt may exist as to the animals of Nodosaria levis 
and N. striata, I think there can be none of the N. striata having 
its unilocular globules piled one on the other. In this opinion 
I am strongly supported by an article in the February Number 
of the ‘Annals’ for 1849 by Mr. M‘Coy, who thus observes on 
his Nodosaria fusulinaformis :— 
“Shell of two or more inflated, pyriform, easily separable 
lodges, the first one having a small mucronate point at its 
posterior end, and contracted to a very slender, short neck at 
the anterior end which joins the pyriform second cell, which is 
also contracted to a similar minute neck in front; surface 
smooth.” 
Mr. M‘Coy also observes, “ that the lodges or cells are almost 
always found separated (from the minuteness of the connecting 
neck).” Mr. M‘Coy also says, “I have however heard of several 
of them being found united in a line by their little necks, and 
the posterior cell not being a terminal one.” 
This is substantially my account of Lagena levis in my first 
paper, and I can truly say, that Mr. M‘Coy’s article never came 
to my knowledge until long after it and the present notes were 
written. I have scarcely a doubt from the extracts, that these 
organisms are of a nearly, if not absolutely identical structure 
with Montagu’s Vermiculum leve, our Nodosaria, and the Lagena 
levis of authors ; they have the same slender strangulations of 
the nodulous Lagene, the fragments of which have so long been 
mistaken for distinet objects. The typical Nodosarie have nothing 
hke the aspect of the very recent lageniform species, first, I 
