Quarterly journal of microscopical science . jlg, 1^ Two specimens of Drepanidium ranarum, treated with iodiue and showing refringent granules. able to these parasites in a generic sense, since we are acquaintedwith other cell-parasites which illustrate and explain the curious. Fig. 2.—a. One end of the sac-like parasite of mammalian muscular fibre,here designated 8arcocystis Miescheri (after Leuekart). b. Drepani-dium-form of young liberated from spore-like bodies in the same, cD. Drepauidum-form of young from cysts of Coccidium of the housemouse. E F G. The same in movement (after Eimer). re


Quarterly journal of microscopical science . jlg, 1^ Two specimens of Drepanidium ranarum, treated with iodiue and showing refringent granules. able to these parasites in a generic sense, since we are acquaintedwith other cell-parasites which illustrate and explain the curious. Fig. 2.—a. One end of the sac-like parasite of mammalian muscular fibre,here designated 8arcocystis Miescheri (after Leuekart). b. Drepani-dium-form of young liberated from spore-like bodies in the same, cD. Drepauidum-form of young from cysts of Coccidium of the housemouse. E F G. The same in movement (after Eimer). relationship between this parasite and the red blood-corpuscle,and the word Cytozoa may therefore be better used as a designa- ON DREPANIDIUM RANARUM. 55 tion descriptive of cell-parasites generally. I propose to enterthe parasite of the cells of the frogs blood and spleen upon thelist of recognised organisms as Brepanidium ranaruyn. Dr. Gaule has added two interesting facts to those which Iwas able to furnish in 1871, relative to Brepanidinm. Themore important is that not only is Brepanidium to be foundattached to the red blood-corpuscle as I had figured it, butthat it occurs also loitldn the substance of the corpuscle. Inthe cells of the spleen these parasites are alsquarterlyjournal221882lond


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