360 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Peculiarities of Metamera schubergi.* — Emile Regnard calls 

 attention to some of the peculiarities of this Gregarine, described by 

 Bolsius, Castle, and Duke, from the intestine of the brook-leech, Glossi- 

 phonia complanata, where it occurs in the posterior diverticula. Besides 

 epi-, proto-, and deuto-merite, the Gregarine may have another segment, 

 or other two. The nucleus has a variable position, and the ectoplasmic 

 partitions are weak. The segmentation of Gregarines is not of much 

 morphological importance. Prolongations of the Gregarine pass into the 

 cells of the intestine and induce a remarkable karyomyxis. Its secre- 

 tion is probably digestive, cell boundaries break down, a syncytium is 

 formed, and there is a more or less mechanical agglutination and con- 

 fluence of nuclei. Siedlecki has described similar phenomena in the 

 spermatogonia of a Polychsete, Polymnia, parasitized by Caryotropha, a 

 Coccidian. 



* Arch. Zool. Exper. liv. (1914) Notes et Revue, No. 1, pp. 1-13 (12 figs.). 



