Rhipllla tomentosa Kiitzing. Collected twice on tke algal plain in 

 20 and 22 m depth., growing with, species of Ayr ainvi Ilea and 

 Udotea . Reported by Taylor (1960) to 30 m depth.. 



Siphonocladus rigidus Howe. Occasional on the reef in 5 to 10 m 



depth. Typically a shallow water plant, previously recorded 

 to 1 m depth by Taylor (1960) . 



Struvea anastomosans (Harvey) Piccone. Collected twice on the reef 

 in 10 and 12 m depth, and once on the algal plain on an 

 isolated coral head in 20 m depth. 



Udotea conglutinata (Ellis and Solander) Lamouroux. Abundant 



throughout the algal plain, common in grass beds, and occasional 

 in open areas on reefs in 6 to 31 m depth. Reported by Taylor 

 (1960) to 57 m depth. On the algal plain, the following fishes 

 were observed eating U. conglutinata : Acanthurus bahianus , A. 

 coeruleus , A. chirurgus , S carus coeruleus , Sparisoma aurofrenatum , 

 S^. rubriplnne , and Pomocanthus arcuatus , During feeding trials, 

 it was taken by Pomocanthus arcuatus , S carus coeruleus and 

 Sparisoma aurof renatvm . 



Udotea cyathiformis Decaisne. Occasional in grass beds and common 

 on the algal plain in 10 to 31 m depth. Reported by Taylor 

 (1960) to 90 m depth. During feeding trials, U. cyathiformis 

 was sampled by Sparisoma aurofrenatum . 



Udotea f labellum (Ellis and Solander ) Lamourovix. Occasional through- 

 out the algal plain and common in sea grass beds in 5 to 23 m 

 depth. Reported by Taylor (1960) to 70 m depth. Randall (1967) 

 recorded Diplodus caudimacula and Balistes vetula as consumers 

 of U. f labellum . 



Udotea spinulosa Howe. Occasional among other Udotea species on 

 the algal plain and in grass beds in 10 to 31 m depth. 

 Reported by Taylor (1960) in depths to 90 m. 



Udotea verticillosa A. and E. S. Gepp. The most common and conspicuous 

 species of Udotea in Lameshur Bay, occurring in extensive beds, 

 sometimes in nearly pure stands, but usually mixed with other 

 algae including other species of Udotea, in 6 to 31 m depth. 

 Reported only from the Virgin Islands, based on Borgesen's 



VI-183 



