FRESHWATER ALGÆ FROM CAUCASUS AND TURKESTAN. 141 



69. Cladophora callicoma Külz. 

 Kützing: Tab. phyc. Vol. IV Pl. 37. 

 Wladikaokas — Kasbek. 



70. Cladophora f rada (Dillw.) Kütz. 

 Tiflis. 



70a. f. gossypina (Kütz.) Rabb. 



Kützing: Tab. phyc. Vol. IV. PI. 51. 



Tiflis; Askabad. 

 70b. forma. 



Wladikaokas — Kasbek. 



Glass JPeridinieæ. 



Family Peridiniaceæ. 

 Genus Peridinium Ehrbg. 



71. Peridinium umbonatum Stein. 



Krasnowodsk — Askabad. Amongst Ghara. Long. 32,5 /^i, 

 lat. 25 ^t. 



Ghristiania. November 1919. 

 The Botanic Museum of the Royal Fredericks University. 



