ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 977 



at tlie same time elongated into a sort of flat tail-like appendix. On the 

 right side, dorsally and ventral, a pointed lobe projects posteriorly. 



(c) Entodinium minimum nov. sp., 0*038 mm. long, 0*023 mm. 

 broad, resembles the first species in form, it is, however, smaller. The 

 anus is a fissure. 



New Gregarine.* — Mr. F. E. Beddard gives a description of a new 

 Gregarine found by him in the vesiculee seminales and body-cavity of a 

 Perichseta from New Zealand. It is from 1^2 mm. in length. The 

 smallest examples had a globular body furnished with one or two slender 

 processes, which are usually of greater length than it, so that the creature 

 may have the appearance of a bead strung upon a thread. Older forms 

 have the body limited by a clear membrane, and there are superficial 

 fibrillar markings. Up to this stage multiplication is by transverse 

 fission. In a third stage the body is covered by a remarkable cyst ; this 

 is of great thickness on the processes of the body, though much thinner 

 on the spherical region. In this cyst there are nuclei, and it is probable, 

 therefore, that it is not entirely formed by the parasite ; this cyst is 

 quite unlike anything that has been recorded in a Gregarine, but in the 

 Myxosporidia cysts are met with which are nucleated, and, therefore, 

 probably formed pathologically by the tissues in which the parasite 

 lives. The author had not been able to obtain evidence of sporulation, 

 but hopes to be able to do so. 



* Proc. Zool. Soc. Lond., 1888, pp. 355-8, 



