738 
Transactions of the Society. 
Genus Schizochlamys A. Br, 
S. gelatinosa A. Br. 
Diam. cell. 10-12 /i. S., Sk., L. 
S. delicatula sp. n. Fig. 57. 
S. cellulis parvis, globosis subglobosisve, vel singulis vel 
geminis in familias consociatis; familise 10-50 in matricem 
hyalinam achroam aggregatae ; membrana tennis dissociata in 
unam portionem ; divisio cellularum in unam directionem fit. 
Diam. cell. 5 *8-6 *7 fi. Bo., Bn., Esthwaite Water. 
This is a much smaller and more delicate plant than S. gelatinosa 
A. Br., the much thinner membrane separating in one piece, the new 
cell escaping by a lateral slit, and the division of the cells is only in 
one direction. 
Genus Eremosphasra De Bary. 
E. viridis De Bary. Frequent. Occurs up to 2400 ft. on 
Helvellyn. 
Genus Botryococcus Kutz. 
B. Braunii Kutz. B., Bn., Black Sail Pass, near Cockermouth. 
B. calcareus West. Bn. 
Genus Urococcus Hass. 
TJ. insignis (Hass.) Kutz. Very frequent. 
Genus Bhaphidium Kutz. 
B. polymorphum Fres. var. falcatum (Corda) Babh. Very 
frequent. 
var. aciculare (A. Br.) Babh. Bn. 
*B. convolutum (Corda) Babh. Bo. 
B. biplex Beinsch. Bn. 
Genus Scenedesmus Meyen. 
S . bijugatus (Turp.) Kutz. Near Cockermouth, Bassenthwaite 
Water. 
S. alternans Beinsch. Bo., Bn. 
S. denticulatus Lagerh. 
var. linearis Hansg. (var. lineatus West). Bn., Hk. 
S. quadricauda (Turp.) Breb. Frequent. 
S. antennatus Breb. Bn., Bydal Water. 
S. acutus Meyen. Frequent. 
var. obliquus (Turp.) Babh. Bn., near Cockermouth. 
var. dimorphus (Kutz.) Babh. Bn. 
Genus Tetraedron Kutz. 
T. minimum (A. Br.) Hansg. 
Lat. cell. 10 ya ; crass. 6 \x. Angle Tarn, 
*T. trigonum (Nag.) Hansg. Bn. 
