221 
Guanica Centrale, we secured the use of the sloop Canario of 
Guanica, Dario Morcilio captain and owner, for a period of 
sea-bottom and of other local conditions was found most 
seful. 
On June 19, 20, and 21, collections were made along the shore 
G a Harbor, the p ent shores, and the 
outlying reefs offer unusually favorable habitats for representa- 
tives of = ane Caulerpa, nin more specie! which are 
ion. Caulerpa taxifolia, C. crassifolia, C. 
erp 
sertuariodes, i ae era and C. periciiate occur in abundance, 
association with the red mangrove (Rhizophora Mangle). 
| the mouth of the harbor and on the reefs, Caulerpa racemosa 
grading in many other islands of the West Indies and as a result 
I incline to the opinion that Cawlerpa racemosa and C. clavifera 
are entitled to rank as distinct species. It must, however, be 
admitted that on the roots of Rhizophora and occasionally in 
al 
s parent t t : alophila Batllonis, a smal 
creeping plant ing a superficial resemblance in habi 
certain Caulerpas, but really a spermatophyte of the family 
Hydrocharitaceae, forms extensive m e se ttom in 
Guani rbor, ranging in depth from 3 dm. to of wi 
In certain other places along the south shore of the island this 
was dredged up from a depth of at least . m., ich dept 
Among the red algae, the more prominent are several 
