176 A BEGINNING OF THE STUDY OF THE FLORA 



obtained though not always just when one wants them for 

 class work. A number of species of Difflugia and Areella 

 with their delicate shells can be located in canal or pond 

 material after it is left for a short time in dishes on the table 

 in the laboratory. The following additional forms are not at 

 all rare : — 



Actinophyrs sp. Urostyla sp. 



Euglena, a large number of Vampyrella sp. 



species. Carchesium sp. 

 Coleps sp. ' Epistylis sp. 



Paramoecium, several spec- Podophyra sp. 



ies. Lacrymaria sp. 



Stentor sp. Actinosphaerium sp. 



Oxytricha sp. Centropyxis sp. 



Stylonychia sp. Vaginicola sp. 



Vorticella, several species. Dinobryum sp. 



Nuclearia sp. Amphilepsis sp. 



Phacus, two species. , Trachelocerca sp. 



Spirostomum sp. Chilodon sp. 



Halteria sp. Loxodes sp. 

 Uroleptus sp. 



These and numbers of other forms occur here in large 

 quantities. 



Chinese Fresh Water Sponges. 



Through the kindness of Dr. Annandale of Calcutta, who 

 has identified all of our earlier sponges, we are able to report 

 a number of sponges from Soochow. Including his collec- 

 tions there are now ten species of fresh water sponges known 

 from round Soochow. Three from Yunnan have also been 

 found and we list them all herewith : — 



Yunnan. 



Spongilla (Euspongilla) lacustris. 



Spongilla (Stratiospongilla) dementis Annandale. 



(synonym = S. yunnanensis). 

 Nudospongilla coggini (Annandale). 



Kiangsu. 



Spongilla (Euspongilla) micron Annandale. 



Tai Hu, Soochow. 

 Spongilla (Euspongilla) semispongilla (Annandale). 



Soochow. 

 Spongilla (Eunapius) geei Annandale. Loen Mung, 



Soochow. 



