4131 STUDIES ON MYXOSPORIDIA— KUDO 175 



Genus incert. MERLUCII Perugia 

 [Figs. 582 and 583] 

 1891 Myxosporidium merlucii Perugia 1891 : 22-24 



1894 Myxobolus ? merlucii Gurley 1894 : 242-243 



1899 Myxobolus merlucii Labb6 1899 : 100 



Habitat: Gall-bladder of Merlucius merlucius L.; Italy. 



Vegetative form: Various form. No differentiation of protoplasm. 

 Disporous (?). 



Spore: Oval, with two polar capsules. 



Remarks: The species was placed in the genus Myxobolus by previous 

 authors. The figures given by Perugia show that the spores are at least 

 dimorphous. From the habitat and the disporous characters, one should 

 place it rather in one of the genera of the Family Ceratomyxidae. 



Genus incert. CONGRI Perugia 

 [Figs. 584 and 585] 

 1891 Myxosporidium congri Perugia 1891 : 24-25 



1894 Genus incert. congri Gurley 1894 : 182 



1912 Myxobolus congri Parisi 1912 : 284 



Habitat: Gall-bladder of Conger conger L.; Genova. 

 Vegetative form : Floating in the bladder. Form variable. Movements 

 incessant, slow and ameboid. 

 Spore: Not described. 



Habitat: Subcutaneous tissue of Notropis megahps Raf.; Ohio (Black 

 River; September, October). 



Vegetative form: Cysts. Globular, discrete or aggregated into clusters, 

 white, with minute patches of black pigment from host; size varying from 

 2.5mm. (single cyst) to 7mm. by 5mm. (clusters) ; cyst-membrane composed 

 of connective tissue. 



Spore: Top-shaped, somewhat flattened; with pointed anterior and 

 broadly rounded posterior end. Shell thick, with elevated sutural ridge. 

 Polar capsules could not be detected. Protoplasm finely granular. Dimen- 

 sions: length 17/i, breadth 10/t, thickness 6;u. 



Remarks : The cysts and figures of spores given by Linton suggest that 

 it is most probably a unicapsular Myxobolus. As Linton could not detect 

 (?) the polar capsule, tho his figures faintly show the said structure, it is 

 placed in this group. 



