Kingston Harbor is nearly enclosed by a low narrow tongue of 

 land about eight miles long known as the " Palisadoes." The 

 bottom of the harbor is for the most part muddy, and wide stretches 

 of it are covered with " eel-grass " or " turtle-grass " — Thalassia 

 testudinum. In the Bahama Islands, Bermuda, the Florida Keys, 

 and Porto Rico, the Thalassia is often accompanied by interesting 

 marine algae of such genera as Penicillus, Rlupocephalus, Hali- 

 meda, Udotea, and Caulerpa, and its leaves often bear a variety 

 of algal epiphytes, but in Kingston Harbor, at least at the time 



of my visit, this eel-grass seemed to occupy the field to the ex- 

 clusion of nearly everything else. However, certain kinds of 

 algae were to be found on either shore of the harbor ; and on the 

 roots of the mangroves, which were especially abundant near the 

 mouth of the harbor, were collected the species of Bostrychia, 

 Polysiphonia, Catcnella, etc., which commonly affect such situa- 

 tions throughout the West Indian region. In a little creek con- 

 necting two mangrove-fringed lagoons were found a few specimens 

 of the rare and interesting Acicularia Schenckii, occurring in sur- 



