490 



prominent components of this vegetation are Grateloupia dicho- 

 toma and Gr. cuneifolia, Enteromorpha lingulata, Ulva Lactuca, 

 Gymnogongrus tennis, Bryopsis plumosa, Hypnea cervicornis and 

 musciformis, Spyridia filamentosa and Sp. clavata etc. 



In deeper water at a depth of about 5 fathoms near Buck 

 Island at St. Croix a rich vegetation of various algae was present; 

 among the most characteristic were Griffithsia globifera, Liagora 

 pinnata, Wrangelia penicillata, Laurencia Poitei and L. obtusa, 

 Hypnea cervicornis, Gracilaria lacinulata, Digenea simplex, Am- 

 phiroa fragilissima, Dilophus Guineensis, Dictyota ciliata and 

 D. rolubilis, Zonaria variegata, Udotea Flabellum, Penicillus La- 

 mourouxii, Caulerpa cupressoides, Neomeris annulata and several 

 others. 



In a similar depth off Frederiksstecl, St. Croix, was found: 

 Penicillus capitatus and P. pyriformis, Udotea Flabellum and U. 

 conglutinata, Dictyota indica, D. rolubilis and D. linearis, Am- 

 phiroa fragilissima, Jania cubensis, several Galaxaura-species 

 Cladophora crispula, Champia parvula, Spyridia filamentosa and 

 Sp. clavata, Digenea simplex and many others. 



In the sea at St. Thomas west of Water Island in a depth 

 of about 10 15 fathoms a vegetation composed mostly of Chlo- 

 rophycese and among these especially representatives of Codiaceas 

 were found. Of this family were present here: Penicillus capi- 

 tatus, P. pyriformis and P. Lamourouxii, Udotea cyathiiormis, 

 U. verticillosa and U. I'labellum, Avrainvillea nigricans, A. Mazei, 

 A. asarifolia, Halimeda Tuna forma platydisca, H. incrassata 

 and Cladocephalus luteofuscus. Of other algse: Caulerpa prolifera, 

 C. crassifolia, C. cupressoides var. flabellata etc. Dictyosphseria favu- 

 losa, Valonia ventricosa, Microdictyon umbilicatum, Anadyomene 

 ste'lata, Callithamnion spec., Cottoniella, Dictyurus occidentalis, 

 Gracilaria lacinulata, Zonaria variegata and several others. 



But the richest flora of all was found in the sound between 

 St. Thomas and St. Jan in a depth from about 10 to 20 fathoms. 



Here was found: Dasya elegans, D. ramosissima and D. cara- 

 ibica, Lophodadia trichoclados, Wrightiella Tumanowiczii, Wran- 

 gelia bicuspidata and W. penicillata, Delesseria tenuifolia, Aspara- 

 gopsis taxiformis, Gracilaria cylindrica with Callithamnion corda- 

 tnin, Rhodymenia occidentalis, Rhabdonia ramosissima, Griffithsia 

 globifera, Callymenia perforata, Bryothamnion Seaforthii, Galax- 



