86 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Man, when I was able to confirm many records from that 

 locality made by previous observers. I have incorporated 

 abstracts of two morphological investigations published 

 in the journal of the Linnean Society. I have to record 

 my thanks to the Council of that Society for their kindly 

 granted permission to reprint Plate III. 



Much yet remains to be done both on the general 

 Marine Flora and on certain special points in Morphology, 

 Physiology and Distribution. On some of these points I 

 have already prepared a few notes, but they are not in a 

 sufficiently advanced state of preparation to warrant pub- 

 lication at present. 



The British Algae number according to Holmes and 

 Batters over 500 species. The present list includes the 

 names of 256 species and varieties, of which 21 belong to 

 the Cyanophycese, 41 to the Chlorophyceae, 65 to the 

 Phseophycese, and 129 to the Ehodophycese. Of these 66 

 were not recorded in my previous list. Several additional 

 species are recorded in Appendix I. as doubtfully natives 

 of our shores. 



The following are the names of the species added to the 

 list previously published. 



Cyanophyce^e. 



Dermocarpa prasina, Born. Symploca hydnoides, Kiitz. 



D. schousboei, Born. Lyngbya spectabilis, Thur. 



Spirulina tenuissima, Kiitz. Nodulariaharvey ana, Mert. 



S. pseudotenuissima, Crn. Calothrix pulvinata, C. Ag. 

 Oscillaria corallince, Gom. 



Chlorophyceae. 

 Prasiola stipitata, Suhr. Epicladia flustrce, Eke. 



Enteromorpha canaliculata, Diplonema confervoides, 

 Batt. Holm, et Batt. 



