124 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
peripheral nuclei are to be found. These continue 
dividing until each segment has its own peripheral layer 
of closely- placed nuclei. Following this stage the nuclei 
separate, each with a small portion of the cytoplasm. 
Round the spherical bodies thus formed a delicate 
sporocyst is secreted, and the sporoblasts become the 
resistant spores. In the spore the nucleus elongates 
until it becomes long and coiled in a very characteristic 
manner. A single sporozoite is developed in each spore 
and a mass of residuary protoplasm remains in the 
centre. 
A detailed account of the life history, as far as at 
present worked out, will shortly appear in the ‘‘ Archiv 
f. Protistenkunde.”’ 
The position of the new species is as follows :— 
COCCIDIIDEA. 
Fam. POLYSPOROCYSTIDAE. 
Genus, Merocystis; species M. kathae. 
The parasite is characterised by the division of the 
oocyst by septa into secondary cysts, in each of which 
numerous spores are formed. These all lie in the later 
stages loosely in the larger cyst. The sporocyst is 
smooth and not bivalve. The spores are monozoic. 
