300 REPORT OF THE COMMISSIONER OF FISH AND FISHERIES. 



Plate 32. 



Figa. 1, 2. Myxobohis creplini. 



la-e. (After Creplin. X 1.) 



la, b. Vertical view of spores. 



Ic. Transverse view. 



l(i. Vertical view (of an illusory appearance? Seep. 249). The larger size of 

 this figure merely represents higher magnification. 



le. Transverse view of spore with the valves gaping anteriorly. 



2. Vertical view of spore (after Leuckart. X 1). 

 Figs. 3, 4. Myxoboliis moniirus (after Ryder. X 3). 



3a. Aphredoderus snyanns with tumors. 



3h. Cyst, much enlarged. 



3c. Vertical views of 2 spores, showing capsules and tails. 



ib-d. * Vertical views of spores. 

 Fig. 5. Myxobolus macrurus (original). Vertical view of spore, showing capsules, 

 sporoplasm with vacuole and 3 nuclei (2 the pericoruual), and the full length 

 of the tail (about 4 times that of the body). 



Plate 33. 



Figs. 1-4. MyxobolKS macrurtis (original). 



1. Transverse view showing, on the right side, the more convex superior valve 



and the greater anterior projection of the supero-median cornu; on the left, 

 the less convex inferior valve; along the center, the narrow ridge. 



2. Vertical view, showing the vacuole and nuclei. 



3. The same, showing also the beading of the tail after the action of iodine. 



4. A tail separated from the body by iodine. 

 Figs. .5-8. Myxobolus cf. liuearis (original). 



5. Vertical view, showing divergence of valves under action of sulphuric acid, 



and the tail separating into a superior and au inferior half. 



6. Transverse view, showing supero-inferior symmetry and narrow ridge. 



7. Vertical view of unstained spore, showing vacuole. 



8a-d. Vertical views of spores, showing vacuole, nuclei, and flexibility of tail. 

 Hydrochloric acid alcohol carmine. 



Plate 34 



Figs. 1-4. Myxobolus psorospermicus. 



1. From brauchise of Perca fluvlatilis (after Lieberkvihu in Biitschli. x t). 



X about 97.5. 

 la. Vertical view of spore with a simple tail. 

 lb. Transverse view of same. 

 Ic. Vertical view of spore with a double tail. 

 2a-c. From a branchial cyst of P. fluriaiiUs, showing capsules, sporoplasm, 



vacuole, and nuclei, a, with 1 nucleus; b, with 2 nuclei; c, with 3 nuclei. 



Carmine and gentian violet (after Thelohan. x 1). 

 3a-d. Spores from Perca _/?wi'ia<i?is (after Balbiani. X f). 

 ^ 3a. Vertical view. 

 36. Transverse view of spore with 2 tails. 

 3c. Form slightly abnormal. 

 3d. Vertical view of spore, showing capsule with filaments extrudea, coruua o- 



sporoplasm, and pericornual nuclei. 

 4. Spores from Lucius lucius (after Balbiani. X f ). 

 4a. Vertical view. 

 4&. Transverse view. 



4c. Spore with valves separating to permit exit of sporoplasm 

 id. Vertical view showing filaments extruded, and cornua of sporoplasm. 



Plate 35. 



Figs. 1-7. Mifxobohis kolesnikovi (after Kolesnikoff)- 

 1-6. Cysts (X 1). 



7a-o. Spores showing extruded filaments and single and double tails (x |). 

 7g. Separated capsule with extruded filament. 



*No o to this figure. 



