232 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Fucus turbinatus = Turbinaria trialata. 



" natans = Sargassum bacciferum, at least in part. 

 " acinarius. 

 " vesiculosus. 

 " triqueter. 



Ulva pavonia = Padina sp. 

 " Lactuca. 



After this date, except for an occasional reference in some general 

 work, we find nothing until Murray's West India list.* In this are in- 

 cluded references to Sloane and Browne, and several species are added 

 from specimens in the British Museum, collected by Chitty ; in a few 

 cases, however, these are species so little to be expected in tropical 

 regions, that it seems as if there must have been some displacement 

 of labels. The total number of Jamaica species mentioned in Murray's 

 list is surprisingly small, if we consider the size of the island, and that 

 it has been so long a comparatively thickly settled English colony. It 

 would be hardly fair to compare it with the Maze & Schramm Guade- 

 loupe list, f for it is not improbable that half the species in the latter, 

 certainly more than half the new species, will ultimately be relegated 

 to synonymy or to the catalogue of indeterminables. As an instance 

 of this, see the genus Gracilaria; 57 species are given by Maze 

 and Schramm under Gracilaria and Plocaria ; 15 of these are species 

 whose previously known distribution would lead one to expect them in 

 Guadeloupe ; of 5, the previous record would make their occurrence here 

 unlikely ; the remaining 37 are new species, with scanty description or 

 none at all. Any one at all familiar with Gracilaria will recognize what 

 this means. 



But as compared with Puerto Rico, for which Hauck's list t gives 92 

 species against 31 Jamaica species in Murray's list, the disproportion is 

 so great that it might seem as if there must be some special conditions at 

 Jamaica to impoverish the marine flora. 



Within the past few years the writer has had the opportunity of ex- 

 amining three collections of algae from this island, that show quite con- 

 clusively that this is not the case, and that there is every reason to 



* Catalogue of the Marine Algae of the West Indian Region, by George Murray. 

 Journal of Botany, Vol. XXVII. p. 224. 1889. 



t Algues de la Guadeloupe. 2d Edition. Maze & Schramm, Basse Terre, 

 1870-77. 



| Meeresalgen von Puerto-Rico, von F. Hauck. Engler's Botanische Jahrbiicher, 

 Vol. IX. p. 30, 1888. 



