. Contributions to Canadian biology. Marine biology; Natural history. 32 MARINE AND FISHERIES 5 GEORGE v., A. 1915 3. Myxidium Sp. ? The myxosporidium of this rare parasite was not seen in fresh preparations of the bile. In stained smears there occurred a large spheroidal myxosporidium containing twenty-two nuclei, and having numerous long lobose pseudopodia on one side. The general arrangement of the pseudopodia suggested that they served for the attachment of the myxosporidium to the gall bladder. It contained no spores. The pansporoblasts are spherical n. in diameter. a. Fig. 3 Fig.
. Contributions to Canadian biology. Marine biology; Natural history. 32 MARINE AND FISHERIES 5 GEORGE v., A. 1915 3. Myxidium Sp. ? The myxosporidium of this rare parasite was not seen in fresh preparations of the bile. In stained smears there occurred a large spheroidal myxosporidium containing twenty-two nuclei, and having numerous long lobose pseudopodia on one side. The general arrangement of the pseudopodia suggested that they served for the attachment of the myxosporidium to the gall bladder. It contained no spores. The pansporoblasts are spherical n. in diameter. a. Fig. 3 Fig. 3. Spores of Myxidium sp. from Pseudopleuronectes americanus. o, with polar filament extruded by ammonia water. X 660 b X 1320. The spores (Fig, 3) are spindle shaped with the long axis slightly bent in the form of an S. The polar capsules are pear-shaped and situated at either end of the spindle. The polar filaments were visible in the fresh state within the capsule. The polar filaments were extruded in ammonia water (Fig. 3, a). The dimensions of'a typical spore are: Length 14-15 n. Width & A«. Length of polar capsule 4 /x. Width of Polar capsule /x. Length of extruded polar filament 90-95 m- This species of Myxidium was found in the gall bladder of Pseudopleuronectes americanus on the coast of New Brunswick, Canada. The spores found resemble most closely those of M. bergense Auerbach (:09, p. 74 and '09*. p. 61) but differ from these by their small size and longer polar filaments. They resemble also the spores of M. sphericum Thel. but differ in the relatively smaller polar capsules (Thel. '95, PI. 7, Fig. 28) and the longer polar filaments. 4. Myxosporidium of an undetermined species. Attached, usually in large numbers, to the epithelium of the gall bladder in Urophycis chuss, occurs a spherical or ellipsoidal myxosporidium which in stained preparations is found to contain numerous nuclei (PL IV, Figs. 6-8). The examination of a large number of these myxosporid
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