OF ARTS AND SCIENCES. 865 



182. Delesseria involvens, Harv. Key West. 



183. Delesseria Leprieurii, Mont. West Point, .Jackson's Ferry, 

 N.Y. ; and in brackish water southward. 



*184. Delesseria decipikns, Ag., Bidrag. {D. hypoglossum, var. 

 arborescens, Harv.) Vancouver's Island. 

 *18.5. Delesseria intermedia, Ag., Bidrag. Vancouver's Island. 



18G. NiTOPilYLLUM PUNCTATUM, var. ocdlatum, Grev. Smith- 

 ville, N.C.; Key West. 



187. NiTOPiiYLLUJi LACERATUir, Grev. California. 

 *188. NiTOPUYLLUii LATissiMUM, Ag., Bidrag. {Hymenena, Harv.) 

 Vancouver's Island. 



189. NiTOPiiYLLUM Fryeanum, Iliirv. California. . 

 *190. NiTOPiiYLLUM (Neuroglossum) Andersonii, Ag. mscr. 

 California. 



191. NiTOPnYLLU.M RuPRECHTiANUJf, Ag., Bidrag. {Hymenena 

 fimhriata, Post, and Rupr.) West coast. — ■ Southern It mill 



19i2 ? NiTOPiiYLLUM FissuM, Ag., Bidrag. {Hijmenena fissa, Harv.) 

 — The Dotryoglossum platycarpum of the Nereis Am.-Bor. is, with- 

 out doubt, the same plant as Hymenena jimhriata. Post, and Rupr., 

 which sometimes has an expanse of two feet. I have received speci- 

 mens from Oregon, where the tetraspores are arranged in a network 

 over the frond, as in Hymenena Jissa. Harvey says, however, in some 

 specimens of Botryoghssum, he has seen on the same individual tetra- 

 spores forming a network, and also in marginal leaflets. Applying 

 these remarks to Hymenena jimhriata, which was in reality the jjlant of 

 which Harvey was speaking, we must 'infer that there is a very strong 

 probability that the American specimens of Hymenena Jrssa are noth- 

 in<T but states of H. Jimbriata, Post, and Rupr. = Xitophyllu-M 

 RcPRECiiTiANUM, Ag., Bidrag. 



193. Calliblepiiaris ciliata, Kiitz. Cape Ann, Mass., and 

 northward. Not common. 



194. Gracilaria multipartita, Ag. East and west coasts. 

 Var. ANGUSTissiMA. — I can hardly believe that this is really a form 



of G. multipartita, unless it be supposed that G. compressa, Grev., is 

 also a variety of the same species. The variety is very common in 

 Lonif Island vSound, and certainly has more the aspect of G. com- 

 pressa than of G. nudlipartita. 



195. Gracilaria compressa, Grev. Key West. 



196. Gracilaria cervicornis, Ag. Key West, Dr. E. Palmer. 



197. Gracilaria confekvoides, Grev. Charleston, S.C., south- 

 ward ; California, Oregon. 



