156 Mr George W. Traill on the [sess. lii. 



The Marine Ahjm of Elie, with Map of the District (Plate 

 IV.). By George W. Traill, Joppa. 



(Read lOtli November 1887.) 



This locality, extending from the " Lady's Tower " to the 

 " Devil's Cave," is, so far as my experience goes, much more 

 prolific than any other in the Firth of Forth. 



It contains, indeed, within little more than three miles of 

 shore, almost as many species as are to be found in the rest 

 of the Firth ; and the specimens are, generally speaking, fine. 



This unusually favourable growth of Algie I attribute to 

 the dark basaltic rocks of the locality, together with the 

 southern exposure and sheltered situation. 



Finding the shores to be so prolific, I thought it might be 

 advantageous to have a full list of the Algae, accompanied 

 l)y an algological map of the district; and I hope that the 

 following attempt may prove of some assistance to botanists 

 in collecting specimens. 



The dates given for the fructification and duration of 

 species are necessarily approximate in certain cases, varying 

 according to the maturing influence of the seasons. 



1. Ahnfeldtia plicata, Ag. 



Common in sandy pools near low-water mark ; 

 always submerged. Perennial. Fruit early in winter. 



2. Alaria esculenta, Grev. 



Common in exposed places at low-water mark ; always 

 submerged. Perennial. Fruit in winter, 

 o. Anperococcus eehinattts, Grev. 



Common at 7, 9, 12,"^ &c., in shallow pools near high- 

 water mark; always submerged. Often epiphytic on 

 AlgiL'. Amiual, April to October. Sporangia in 

 summer. 



4. Bangia fusco-inirpurea, Lyngb. 



On smooth stones and on rocks, at 2, at and above 

 half-tide ; usually dry at ebb tide, and in the sun. 

 Annual, March to September. Fruit, May and June. 



5. Bonnemaisonia asparaf/oidcs, Ag. 



Cast ashore at 12. 

 G. Brijo'ima 'p^'U'i'f^osa, Lx. 



At 2, 4, &c., rare. (Flue at " Shell Pay.") In pools 

 * The iiuiiibcrs refer to the sections in tlie accomianyin^' niajt. 



