THE BAHAMA ISLANDS 333 



them may be mentioned Myrica cerifera L., Baccharis cmgustifolia Michx., 

 and Sagiitaria landfolia L. Plate XXXVII, Fig. 1, is a view of a fine Inodes 

 palmetto (Walt.) Cook (Thatch palm) standing in one of these fresh marshes 

 on the north side. 



EocKT-SHORE FORMATION. — The north shore of New Providence differs 

 from the south shore in the occurrence of exposed rocks at many places. These 

 rocks are at some points precipitate; at others they form a gentle slope, and 

 in such places are apt to be covered for some distance with a coating of sand 

 next to the sea. In such sandy situations the vegetation is very similar to 

 that of the south beach; but where the rocks are exposed there is an abrupt 

 change. In many places the exposed rocks are covered with a dense growth 

 of Rhaciccdlis maritima (Jacq.) Schum, and Suriana maritima L. in pure 

 association, the sand-strand plants being entirely absent. Behind the Rhaci- 

 callis and Suriana is Coccolobis uvifera (Ij.) Jacq. and the attractive white- 

 flowered Genipa clusiwfolia (Jacq.) Griseb. Following these and extending 

 slightly into them are found the ram's horn, darling plum, blolly, Jack-bush, 

 wild lime and other littoral coppice plants. At places Hymenocallis arenicola 

 Northrop forms attractive clumps of bloom. 



MANGROVE CAY, ANDROS. 



Here for the first time we met with a forest in the Bahama Islands. Pass- 

 ing over a range of hills and down a long slope, we came to a low, irregular 

 country where the growth gradually became higher until it finally passed 

 into what might be called a forest, where the Lysiloma paucifoUa (DC.) 

 A. S. Hitch. (Horseflesh), Lysidoma latisiliquu (L.) Benth. (Wild tamarind), 

 Faga/ra coriacea (A. Eich.) Kr. & Urb. (Doctor's club), and Eypelate tri- 

 foliata Sw. (Eed-wood) reached a height of 40 to 50 feet with a diameter of 

 3 feet or more. Next to these in size, with a height of 30 to 40 feet, were 

 Coccolohis laurifolia Jacq. (Pigeon plum), Metopium metopium (L.) Small 

 (Poison-wood), Ichthyomethia pisdpula, (L.) Hitch. (Dogwood), and Swie- 

 tenia mahogani L. (Mahogany) . The growth was thick and the shade dense. 

 The floor of rock was deeply excavated and very irregular, and in crevices and 

 depressions were deposits of black-loam, where fleshy fungi were rather abun- 

 dant. On rotting wood we collected in a few minutes all of the Myxomycetes 

 listed in this report, and there is no doubt that a thorough search would dis- 

 cover a large number of this group on Andros. 



On the shoreward side of the hills just mentioned, where an uneven plain 



