54 



PROFESSOR E. RAY LANKESTER. 



It is well that a definite systematic name should be employed 

 for these parasites, if only to avoid the misleading name of 

 '' Wiirmschen" applied to them by Dr. Gaule. The term 

 " Cytozoa/' of which this writer also makes use, is not applic- 



j'lg, 1^ Two specimens of Drepanidium ranarum, treated with iodiue and 



showing refringent granules. 



able to these parasites in a generic sense, since we are acquainted 

 with 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, c 

 D. Drepauidum-form of young from cysts of Coccidium of the house 

 mouse. 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- 



