NOTES ON THE AGRICULTURE, 



BOTANY AND ZOOLOGY 



OF CHINA 



B. W. SKVORTZOW 



XL VII. — On the Phytoplankton from the Ponds of 



Tientsin. 



Being in Tientsin in March 17, 1919 a small collection 

 of Algae was gathered by me in the ponds of the Russian 

 Garden and near the brick-kilns. 



In this collection were found the following species : 

 Dinobrjjon sociale Ehrenb. 

 Peridinum Marssonii Temm. 

 Ceratium herundinella (O.F.M.) Schrank. 

 Trachelomonas volvocina Ehrenb. 

 Trachelomonas planctonica Swir. var. ornata Skvortz 



forma (see Fig. 5). 

 Trachelomonas acuminata (Schmarda) Stein var. verrucosa 



Teodoresco (see Figs. 1, 2 and 3). 

 Trachelomonas piscatoris (Fisher) Stokes var. granulata 



Skvortz. 

 Trachelomonas verrucosa Stokes var. minor Skvortz. 

 Trachelomonas sp. (see Fig. 7) a species very near to 



T . conspersa Pascher. 

 Euglena acus Ehrenb. 

 Euglena viridis Ehrenb. 

 Euglena intermedia (Klebs) Schmidle. 

 Euglena tripteris (Duj.) Klebs. 

 Phacus pyrum (Ehrenb.) Stein. 

 Phacus caudata Hiibner. 

 Phacus sp. (see Fig. 6) a species in size like Phacus. 



caudata. 



