Vm TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Aphanotheca prasina, Br. 



Found in ditches at Woodville, L. in globular masses 



from \ to \\ inches in diameter, (N and B). 

 Family. — Nostocace^. 

 Nostoc humifusum, Carm. 



Found on other algae in ponds at Bromborough, C. 



and Baby, C. (N). 

 N. sphcericum, Vauch. 



Found in ponds among mosses at Baby, (N). 

 N. commune, Vauch. 



In ditches. 

 N. rupestre, Kutz. 



On damp soil. 

 N. muscorum, Ag. 



On rocks at Huyton, (N). 

 N. pricniforme, Ag. 



On mosses from ponds. 

 N. hyalinum, Benn. 



Lydiate, L. (D). 

 Anabama flos-aquce, Fr. 



Found floating among other Algae in ponds. 

 A. variabilis, Kutz. 

 A. incequalis, Balfs. 



Boggy ditches at Barton, L. (N). 

 Sphcerozyga jacobi, Balfs. 



Pond at Capenhurst, C. and Shotwick, C. (N). 

 S. elastica, Balfs. 



Pond at Shotwick, C. (N). 

 Cylindrospermum macrospermum, Desm. 



In fragments found three or four times. 

 C. coma-turn, Wood. 



Found at Bromborough, C. (N), and at Little Sutton, 



C. in quantity, in which the heterocysts were fim- 

 briated, the spore brown and coated in the older 



