88 General Notes. 
The study of Stentor polymorphus and Vorticella chlorostigma have 
fs ; 
also served to convince me that so 
The detection of vegetal parasites of a wholly different character 
in a fresh-water mussel, by Leidy, is a case of an entirely different 
animal by means of sections in both the living and dead con 
tion. The most conclusive evidence as to the relations of t 
green blood-cells to the heart may be obtained from transve 
sections of hardened affected specimens of the latter organ, 
trabecular meshes of the walls of which have served to retain t 
abnormal cells in large masses or even as a thick adherent le 
covering the whole of the internal parietes of the ventricles. 
even extending down behind the auriculo-ventricular valves 
to impede their action. Contrasting this state of affairs with 
is seen in a normal heart in which no such inter-trabecular dep? 
its are discoverable, we find that the whole organ differs, too, Iof 
one which is affected, the former being translucent-whitish in 
the other of an opaque pea-green hue on account of the thick 
posit of “tinged” corpuscles.— F. A. Ryder. : 
New AND Rare FISHES IN THE MEDI ANEAN.—P 
