E MYXOSPORIDIA, OR PSOROSPERMS OF FISHES. 137 
Parasite of Sygnathus, Pfeiffer, 1891, Die Protozoen als Krankheitserreger, 
2 ed., p. 111, figs. 46-49: 
From a perusal of the deseription and an examination of the figures 
I can find no evidence of myxosporidian affinities, and have therefore 
excluded this form. While this paper is passing through the press, I 
have, however, observed Pfeiffer’s paper,! in which, in the portion 
devoted to the Myvosporidia, he says: 
Of the Syngnathus from the North Sea, which the author was able to investigate 
two years ago in Helder (Holland), the relative conditions have been thoroughly 
pictured by the author in another place. 
Finally, a comparison with the following may perhaps not be inad- 
visable: 
Csokor, Gregarinosis d. Forellen, Oesterreich. Ztschr. f. wiss. Veterinirkde, Wien, 
1888, 11, pp. 56-58. 
The author says the forms observed were undoubtedly referable to 
the “oviform and globular Coccidia (Gregarines).” From the general 
tenor of his description I suspect they were not Myxosporidia, and in 
any case there is at present no evidence to warrant their admission 
into the subclass. 
Hardly any explanation of the table is necessary. The grouping and 
position of the capsules (and the correlated orientation of the spore) 
is made the leading character. Next come the other generic characters 
(bivalve condition of shell, presence or absence of vacuole, etc.). 
One of the most important uses of this table is to direct attention 
to the gaps in our knowledge. Thus it will serve a useful purpose in 
showing readily where work is most needed. 
'Centralbl. f. Bakt. u. Parasitenkde, 1893, xiv, p. 124. 
