4 Art. 6.— I. Uteda and Y. Ozald : 



hseruatoxylin and no donbt consist of chromatin, are separated 

 from the central granular mass and attached to the nuclear 

 membrane. The micronucleus in the resting state is vesicular and 

 contains the chromatin massed together in the centre, thus a clear 

 peripheral space being produced inside the nuclear membrane. 

 When the micronuclear division sets in, the central chromatin 

 mass is transformed into chromosomes, which are always four in 

 number. 



The present species in question differs markedly from the 

 known American species as well as its Neapolitan variety in possess- 

 ing the prominent lip on the peristomal disc. From the Neapolitan 

 variety it further differs in the rounded, instead of the pointed, 

 shape of the aboral end and in tho larger extension of the oral 

 ciliary spire. The following table shows other points of differences 

 between the three forms of Boveria. 



We feel fully justified in regarding the Japanese form as a 

 new species, for which we propose the name of Boveria labialis. 



