Protozod and Hot if era at Havana, III. 341 



Tokophrya quadrlpartita was found common in company 

 with this species, as was also a small Opercularia, which may 

 prove to he only a variety of irritahilis. The zooids of this 

 small form measured .08 mm. in length and .042 mm. in 

 width, hut otherwise seem to agree with those of irritahilis. 



COTHURNIA Ehrbg. 



Animal similar to Epistylla, hut more elongate ; contained 

 in a lorica which is suhcylindrical, of variously modified 

 shapes, often expanded at middle and narrowed near the 

 opening, attached posteriorly, either directly or hy a short 

 pedicel; sometimes closed when the animal is retracted 

 within it. Nucleus elongate, hand-like. 



89. C. curva Stein. 



Found upon Urnatella (/racilis in July, in hottom towings 

 from the river at E. 



Vaginicola Lam. 



Animal similar to that of Cothurnia ; lorica sac-like, nar- 

 rowed at the opening, attached lengthwise hy the ventral 

 surface and flattened, the opening turned upwards. 



90. V. gigantea DTdek. 



A few individuals were found in Septemher among vegeta- 

 tion in Thompson's Lake. 



Subclass 8UCTORIA. 



Family ACINETID^. 



Tokophrya Butschli. 



Solitary, not loricated, globose to elongate, attached pos- 

 teriorly hy a rigid i^edicel ; reproducing hy the formation of 

 ciliated embryos within the body of the parent. 



91. T. cyclopum C. & L. 



In May and July a few were found on Cijclop.s in towings 

 from Quiver Lake and the river. 



92. T. quadrlpartita C. & L. 



This was the commonest of the Suctorla in our collyctions. 



