Freshwater Algse of S. of England. Bg W. dt G. S. West, 503 
Sub-fam. Dictyosph^rie^:. 
Genus Bimorphococcus A. Br. 
1. B. lunatus A. Br. III. Th., very rare. 
Genus Tetracoecus West. 
1. T. botryoides West. I. Ep. III. Ra., YII. L. 
Genus Botryococcus Kiitz. 
1. B. Braunii Kiitz. I. Ep. III. Bi., C., Mp., Pu., Th. IY. Ks. 
Y. Go. YII. D., Gp. YIII. W. 
Ineffigiata gen. n. 
Cellulae submagnae, irregulariformae, angulari-oblongae, angular!- 
elliptic® yel subtrapezicae, familias valde irregulares libere natantes 
cellularum 2-8 formantes ; cellulae cum processibus brevibus irregu- 
laribus et spinis paucis valde variabilibus, irregulariter curvatis et 
irregulariter dispositis ; contentus chlorophyllosus cellularum viri- 
dissimus et granulas multas includens. 
1. I. neglecta sp. unica. 
Character idem ac generis. 
Diam. cell, sine spin, et proc. 21-40 p , ; long. spin, et 
proc. 5*5-19 p; diam. fam. 76-115 p. III. Ew., 
Mp., Pu., Th. Y. Go. 
We have long had this alga under observation as something which 
required investigating. The cells are rather large with very irregular 
outlines, and each possesses a few irregularly disposed processes or 
spines. These spines are straight or curved, of very variable length, 
and are often somewhat subcapitate or otherwise irregular ; they are 
also the chief agents in uniting the cells into irregular families. The 
exact structure of the cells and families is exceedingly difficult to 
observe, owing to their extreme irregularity and the opacity of the 
densely packed granulose chlorophyll. 
It is more or less abundant throughout the British Islands and 
the United States of America, and often occurs in quantity in tanks, 
water-barrels, &c. We find it frequently in gatherings of the smaller 
algae, and can find no mention of anything approaching it. 
It may be regarded as nearest to Botryococcus Kiitz. 
The name was suggested by its indefinite misshapen form and it 
evident neglect by algologists. 
Genus Bictyosphserium Nag. 
1. B. Ehrenbergianum Nag. I. Ep. II. Wh. III. E., M., 
Mp., Ra., Ep., Wi. IV. He. Y. Go. VI. N. YIII. L. 
2. B. reniforme Buln. I. Ep. 
1897 " 2 N 
