266 REPORT OF THE COMMISSIONER OF FISH AND FISHERIES. 
88. Chloromyxum (Spherospora) elegans Thélohan, 1892. Pl. 40, fig. 1. 
(Myxosporidian spores of Gasterosteus aculeatus and G. pungitius (pars), Thélo- 
han, 1890, Annal. de Microgr., 11, pp. 193, 200, 203, 209, pl. 1, fig. 1.) 
Spherospora elegans, Bull. Soc. philomat. Paris, tv, pp. 167, 175. 
Chloromyxum elegans, Gurley, 1893, Bull. U. 8. Fish Com. for 1891, x1, p. 419. 
Spherospora elegans, Braun, 1893, Centralbl. Bakt. u. Parasitenkde, xiv, p. 739. 
Chloromyxum elegans, Braun, 1894, Centralbl. Bakt. u. Parasitenkde, xv, p. 87. 
Synonymy.—In 1890 Thélohan described the present species and JM. 
medius as spores occurring in the renal tubules of G@. aculeatus and P. 
pungitius. He remarked that the 2 entirely different forms of spore are 
found in close association, occurring not only in the same kidney, but 
side by side in the same tube of the kidney. Their relation to each other 
could not be determined, as he was unable to trace them back to the 
myxosporidium. 
M. Thélohan writes me (1893) that: 
In putting an interrogation point in regard to the presence of Spharospora elegans 
in the kidney of Lota lota, 1 had in mind Balbiani’s fig. 41. The spores which that 
figure represents are indeed a little less regularly spherical than those of Sphwro- 
spora and present a more pronouncedly attenuated extremity. Not having observed 
Myzxosporidia in the Lotas that I have been able to examine, I do not know whether 
these fish contain exactly the same species as G. aculeatus. The figures of Lieberkiihn 
(Miiller’s Archiv., 1854, pl. 14, figs. 5,6) certainly do not belong to Spherospora. 
They, in fact, present 4 polar capsules, and are rather near Chloromyxum jlwiatile. 
till they form, I believe, a distinct species. 
A close study of these figures has led me to doubt seriously whether 
Balbiani’s fig. 41 can be correlated with Chloromyxum (Spherospora) 
elegans. The whole question hinges upon the number of capsules in 
Balbiani’s spore. The close similarity between his figure and Lieber- 
kiihn’s fig. 6, the fact that quadricapsulate forms have frequently 
been figured by the authors as bicapsulate, and finally the close 
approximation in habitat (kidney and urinary bladder of same fish’), 
all point toward the synonymy given above. 
Oyst none; myxosporidium unknown. 
Spore.—Round, nearly spherical, untailed, 8 to 10 4 (Thélohan, 1892; 
9 to 12 yw, ibid., 1890). Ridge present, terminating ina slight projection 
at each end of the spore. 
Habitat.—Almost constantly present in the renal tubules of Gasteros- 
teus aculeatus (stickleback) and those of Pygosteus pungitius (9-spined 
stickleback); ? also in kidney of Lotalota® (ling); “ accidentally” pres- 
ent in kidney of Phoxinus phoxinus L., ovary of G. aculeatus and that of 
P. pungitius (all fide Thélohan; the last two in a letter to the author, 
1893). 
Hffects.—See p. 248. 
1Balbiani does not give the seat. Thélohan cites it as the kidney (fide specimens 
in Collége de France ?). 
2The form habitant here I have referred to Chloromyxum mucronatum (see that 
species, and the paragraph above in this one). 
