484 



Dansk Botanisk Arkiv. Bd. 3. Nr. 1. 



differs from Choreocolax by the clusters of carpospores formed 

 by the sporogenous filaments, while in Choreocolax a single, but 

 very large spore is produced at each place; it further differs by the 

 lack of any carpostome. Harveyella differs from our plant by the 

 fact that the cystocarps form large extended bodies over the sur- 

 face of the plant, and are not confined to small roundish bodies 

 as in my plant. From both genera my plant differs by the sporan- 

 gia being divided into two spores only. 



The plant was gathered in shallow water near the shore in 

 a sheltered locality. 



It had tetraspores, cystocarps and antheridia in the month 

 of January. 



St. Croix: Lime Tree Bay at the south shore of the island. 



159. Gymnogongrus tenuis J. Ag. 



160. Kallymenia perforata J. Ag. 



161. Catenella Opuntia (G. et W.) Grev. 



162. Agardhiella tenera (J. Ag.) Schmitz. 



163. Rhabdonia ramosissima (Harv.) J. Ag. 



164. Eucheuma isiforme (Ag.) J. Ag. 



165. Wurdemannia setacea Harv. 



166. Gelidiopsis rigida (Vahl) Web. v. Bosse. 



167. Graeilaria confervoides (L.) Grev. 



168. — ferox J. Ag. 



169. — - compressa (Ag.) Grev. 



170. — caudata J. Ag. 



171. — cylindrica Borgs. 



172. — usneoides (Mert.) J. Ag. 



173. — Wrightii (Turn.) J. Ag. 



174. — lacinulata (Vahl) Borgs. 



175. — dentata J. Ag. 



176. — cervicornis (Turner) J. Ag. 



177. Hypnea musciformis (Wulf.) Lamour. 



178. — cornuta (Lamour.) J. Ag. 



179. — cervicornis J. Ag. 



180. — spinella (Ag.) Kiitz. 



181. Gloiocladia spec. 



182. Rhodymenia occidentalis Borgs. 



183. Coelothrix irregularis (Harv.) Borgs. 



