* LopliDa,iplionl.a aaccorhlza Collins and Karvay.. On Halim&da 

 and Udotea in 18 to 20 m deptB,, on tke algal plain. 

 Pre-ytously recorded from Benmida and Florida, bnt reported 

 flere for tlie first time for the Virgin Islands. 



Melobesia membranacea CEsper) Lamouroux. On Halimeda incrassata, 

 H. simulans , and Syringodimn filiforme on tbe algal plain 

 and in grass beds in 15 to 21 m depth-. Usnally found in 

 shallow water CTaylor, 1960), 



Peyssonnellia rubra (Greville) J. Agardh. On limestone on the 



algal plain in 20 m depth. Reported to 33 m depth CTaylor, 

 1960) . Randall (1967) recorded Melichthys niger as a 

 consumer of Peyssonnellia sp . 



Peyssonnellia simulans Weber-van Bosse. On limestone on the 



algal plain in 18 to 20 m depth. Originally obtained in 

 the Virgin Islands in 18 to 46 m depth and apparently not 

 discovered elsewhere. 



Polysiphonia havanensis Montagne. Attached to Halimeda incrassata 

 in 21 m depth on the algal plain. Previously reported from 

 shallow water (Taylor, 1960) . Undetermined species of 

 Polysiphonia were recorded by Randall (1967) in the stomach 

 contents of the following fishes: Abudefduf saxatilis , 

 A. taurus , Acanthurus b ah i anus , A. coeruleus , B lennius 

 marmoreus , Cantherhines pullus , Entomacrodus nigricans , 

 Eupomocentrus fuscus , E. leucostictus , Kyphosus incisor , 

 Melichtys niger , Mlcrospathodon chrysurus , Ophiob lennius 

 atlanticus , S earns coelestinus , S^. croicensis , S^. guacmaia , 

 ^. taenlopterus , S_, vetula, Sparisoma aurofrenatum , S_. 

 rubripinne , and S^. viride . 



Polysiphonia sphaerocarpa Borgesen. Found twice growing on 

 SargasKiim in 15 to 20 m depth on the algal plain. 



Seirospora occidentalis Borgesen. Found on Sargassum filipendula 

 and Chrysymenia enter omorpKa in 15 to 21 m depth.. Previously 

 reported from depths to 27 m (Taylor, 1960). 



Spermothamnion investiens CCrouan) Vickers. Occasional on 

 Halimeda incrassata , Caulerpa prolifera , and Gracilaria 

 cylindrica in 16 to 21 m depth, on the algal plain. 

 Recorded from depths to 27 m (Taylor, 1960) . 



VI-197 



