290 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



L. inundata, Kiitz. 



The above have been met with on damp soil, margins 

 of ponds and in ditches and bogs but the places not 

 recorded. 



Symploca ralfsiana, Kiitz. 

 Plectonema kirchneri, Cooke. 



Attached to decaying rushes in boggy ditches at 



Barton, L. (N). 



Family. — Scytonbme^: . 

 Tolypothrix flaccida, Ag. 



Bufford, L. (N). 

 T. distorta, Kiitz. 



Spital, C. (N). 

 T. coactilis, Kiitz. 



Boggy ditches Barton, L. (N), pond Spital, C. (N). 

 Family. — Calotriche.e . 

 Calothrix dillwyni, Berk. 



Eaby, C. (N). 

 Isactis plana, Thur. 

 Bivularia echinata, Eng. Bot. 



In deep pond with Biccia natans, at Spital, C. (N). 

 B. dura, Kiitz. 



Attached to submerged plants, Raby, C. (N). 



Explanation of Plates. 



PLATE XVI. 



Figs. 1, 2. Vaucheria, showing variations of reproduc- 

 tive organs (a) V. sessilis, (b) V. dichotoma, 

 (c) V. terrestris or hamata, X 75. 



Fig. 3. Enteromorpha ramulosa, portion of filament in 

 different stages of development, X 100. 



