216 WEST : NOTES ON THE FRESH-WATER ALG. 
PROTOPHYTA. 
Group SCHIZOPHYCE. 
CLass PROTOCOCCOIDE. 
OrDER EREMOBIE#, 
Ophiocytium cochleare (Eich.) A.Br. Near Meaux Abbey; 
Riccall Common ; Waghen ; Routh ; Newsholme. 
Dictyosphzrium Ehrenbergianum Nig. Hornsea Mere; 
Newsholme. 
Hydrianum heteromorphum Reinsch. Newsholme. 
Nephrocytium Agardhianum Nag. Riccall Common. 
Nephrocytium Nagelii Grun. Newsholme, 
Oocystis solitaria Wittr. Hornsea Mere. 
OrDER PROTOCOCCACEZ (incl. Palmellacea). 
Pleurococcus vulgaris Menegh. Common. 
Chlorococcum gigas (Kiitz.) Grun. Near Meaux Abbey. 
Gleocystis ampla (Kiitz.) Rabh. Riccall Common; Newsholme. 
Gleocystis vesiculosa Nag. Riccall Common ; Routh ; News- 
holme. 
Schizochlamys gelatinosa A.Br. Near Meaux Abbey. 
Botryococcus Braunii Kitz. Hornsea Mere. 
Urococcus insignis (Hass.) Kiitz. Near Sutton. 
Rhaphidium polymorphum Fres. var. falcatum (Corda) Rabh. 
Riccall Common. 
Scenedesmus quadricauda (Turp.) Bréb. Hornsea Mere; 
Loftsome Bridge, near Wressle. 
es acutus ig Riccall Common ; Horses a 
Tetraidron regulare Kitz Riccall Common. 
Cass PHYCOCHROMOPHYCE. 
Sus-CLass NOSTOCHINE. 
OrDER NOSTOCACE. 
Nostoc microscopicum Carm. Riccall Common. 
Anabzna Flos-aquz Bréb. Hornsea Mere. 
Crass. cell. 5; crass. ee ey TPS long. Spor. : 
hen = cade oe - 
