E MYXOSPORIDIA, OR PSOROSPKRMS OF FISHES. 137 



Parasite of Syt/nalhus, PfoifVor, 18fll, Die Protozocii als Krivnklipitserreger, 

 2o(]., p. Ill, ligs. 46-49: 



From a perusal of the desciiptiou and an exaaiination of the figures 

 I can tind no evidence of myxosporidian alfmities, and have therefore 

 excluded this form. While this paper is passing' through the press, I 

 have, however, observed Pfeilfer's paper,^ in which, in the portion 

 devoted to the Myxosijoridia^ he says : 



Of the Syvgnatlms from the North Sea, which the autlior was able to investigate 

 two years ago in Hekler (Holhmd), the rehitive conditions have been thoronglily 

 pictnred 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. wise. Veteriniirkde. Wien, 

 1888, II, pp. 56-58. 



The author says the forms observed were undoubtedly referable to 

 the "oviibrm and globular Coccidia (Gregarines)." From the general 

 tenor of his description I suspect they were not Myxosporidia^ and in 

 any case there is at ijresent 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 al)sence 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 jiarpose in 

 showing readily where work is most needed. 



• Centralbl. f. Bakt. u. Parasitenkde, 1893, xiv, p. 124. 



