22 Mr. G. Murray on Ceylon Algce in the 



" Kurracliee, Murray ! " In those cases where no distribution 

 is given the species is recorded for Ceylon only, so far as I 

 can ascertain. Taking only the marine Algge of the list it is 

 found that there are 118 Floridese, 33 Phasophyceas, and 57 

 Chlorophyceffi. Of these 17 Florideee, 2 Phteophyceas, and 7 

 Chlorophyceee are, so far as is known, peculiar to Ceylon. 

 Of the rest, 60 Florideje, 21 Phasophycese, and 27 Chloro- 

 phyceae have been previously recorded for the Indian Ocean 

 (including in it the Red Sea), many of these being species 

 widely distributed throughout the shores of tropical, subtro- 

 pical, and temperate seas. 8 Florideee, 2 Phfeophyceee, and 

 1 green alga, hitherto known only from the Cape, are now 

 recorded from Ceylon as well. Of Atlantic forms, 17 Flori- 

 deae, 5 Phgeophyceas, and 15 Chlorophyceae, some of them 

 known from Australia and from the Pacific as well, may be 

 said to have now doubled the Cape. Of species hitherto I'e- 

 corded from Australia alone, 7 Floridea^ and 1 green alga 

 are added to the Ceylon list, while of Pacific species (includ- 

 ing some common to Australia) 5 Florideas, 3 Phaeophyce^, 

 and 5 Chlorophyceje are now known to extend to the Indian 

 Ocean. Lastly, and this is an unsatisfactory record, 4 Flori- 

 deae and 1 green alga, hitherto recorded from the Mediter- 

 ranean or Adriatic only, go to compose the following list. 



Speculation on this record would be worthless in the pre- 

 sent state of our knowledge ; but I may venture to point out 

 that ships' bottoms traversing the Suez Canal may be expected 

 in time to affect the distribution of Mediterranean and Hed 

 Sea and Indian Ocean species. 



I. Floeide^. 



Ceramie^. 



CalUthamnion pygmceum^ Kiitz. 

 Ferguson ! 

 Oeogr. distr. Mauritius, Adriatic. 



Callithamnion purpuriferunij J. Ag. 

 Ferguson ! 

 Geogr. distr. Cape of Good Hope. 



Callithamnion thyrsigerum^ Thw. 

 Harvey ! No. 47. Ferguson ! 



Oriffithsia corallina ?, J. Ag., var. 

 Harvey ! No. 46. 



Geogr. distr. Atlantic Ocean (from Scotland to the Cana- 

 ries), Mediterranean. 



