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Coasta Rica
Southside of bay in tidepools on wave washed basalt rocks, intertidal zone.
Playa Coco, Guanacaste, Costa Rica. VI-21-65
Coll.: Roy Tsuda (OTS) (3 meters tide)

*unreported from Pacific side of C.R.

990. ? Gigartina
Beachdrift attached to shell

New record 991. Ulva fasciata Delile

992. Caulerpa racemosa var. peltata (Lamx.) Eubank

993. Pocockiella variegata (Lamx.) Papenfuss

? 994. Dictyota sp.
epiphytic on Pterocladia. Immature for species determination

? 995. Cladophora sp.

996. Spyridea filamentosa (Wulfen) Harvey

New records 997. Jania ungulata Yendo

New ? 998. Gelidiella