THE MYXOSPORIUIA, OR PSOKOSPERMS OF FISHES. 



191 



I. GLUGEA Tb.-lohan, 1891. 

 Etymology: Glnge. 



Compt. Rend, hclxlom. Soc. Biol. Paris, iii, p. 29; Gluega [error] Tb(51ohan, 

 1891, Compt. Rend. Acad. Sci. Paris, cxii, p. 171; ih. Tli.51olian, 1891, Jouru. 

 de Microgr., Paris, xv, p. 147; Glugea Th6lohnn, 1892, Bull. Soc. philomat. 

 Paris, IV, p. 174; ib. Henneguy and Thdlolian, 1892, Annal. de Microgr., 

 IV, pp. 630, 636; ib. Gurley, 1893, Bull. U. S. Fish Com. for 1891, xi, p. 409; ib. 

 Braun, 1893, Contralbl. f. Bakt. u. Parasitenkde, xiv, p. 739 ; ib. Braun, 1894, 

 ibid., XV, p. 86. 



Definition. — Ghigeidoe possessing a myxosporidiiiin, and in which the 

 pansporoblast produces an inconstant but hirge number (always more 

 than 8) of spores; pansporoblast membrane not subpersistent; type, 

 G. mierospora Thel. (synonym for anomala Moniez). 



27. Glugea destruens Tht^lohan. 1892. 



Cyst none. 



Myxosporidium. — Ectoplasm and endoplasm recognizable. 



Spore formation. — Pansporoblast membrane thin, disappearing soon 

 after spore formation. Sporoblasts, consisting of small globules with 

 clear nuclei, sometimes disposed in very great numbers, sometimes iso- 

 lated in groups of 4, 10, or 12 within the pansporoblast membrane. 



Spore. — A little smaller than the similar parasite of Cottus scorpio, 

 2-5 to 3 /.< long; 1 to 1-5 //broad; characters otherwise identical (The- 

 lohan, 1891). Length, 3 to 3-o /<; breadth, 2 /< (Thelohan, 1892, p. 174). 

 Capsule present (Henneguy & Thelohau, p. 019). 



Habitat. — Upon section of the muscles affected, the parasite is seen 

 to have its seat in the interior of even the primitive fibrilhie of the 

 muscles of Callionymm lyra. Not encysted, but forming a parasitic 

 mass, destitute of an envelope, in which ripe spores are seen with 

 others in course of development. 



affects. — Unlike the otherwise very similar condition in Cottus scorpio, 

 the muscular fibers soon break up and undergo vitreous degeneration. 



