FBOM VARIOUS LOCALITIES. 487 



(3) On shore-rocks at Valparaiso the following species were found. 



LAMINARIACE-ffi. 



Macrocystis pyrifera, Ag. 

 M. lati folia, Bory. 

 M. angustifolia, Bory . 

 Lessonia nigrescens, Bory. 



CORALLINACE^. 

 CORALLINA BeRTERII, Mont. 



Rhod ymeniace.2; 



Plocamium cornutum, Turner. 



Cryptonemiace^; 



Irid^ea laminauioides, Bory. 

 Grateloupia versicolor, J. Ag. 



Cekamiacej:. 

 Centroceras cryptacanthum, Ktz. 



Ulvace.*:. 

 porphyra laciniata, ag. 



Enteromorpha compressa, Grev. 

 Ulva latissjma, L. 



COS FERYACE-J5. 



Ch^etomorpha Linum, Roth. 



C. AEREA, DUlw. 



(4) Alga from Port Louis, Falkland Islands, and Magellan 



Straits. 



Ceramiaceje. 



Ceramium involutum, Ktz. 



This is probably a form of the variable C. rubrum, which is re- 

 corded in * Flora Antarctica.' 

 Griffithsia Antarctica, H.f. Sf Harv. 

 Both these were dredged in 4 to 5 fathoms. 

 Melobesia calcarea, Ell. Sf Sol. 



It formed dense beds in Isthmus Harbour, Straits of Magellan, 

 and was dredged in 8 fathoms. 



