OF ARTS AND SCIENCES. 477 



The species is said by Kjellnian to have been found at Neuherrnhut, 

 Greenland. It may be expected to occur in the Gulf of St. Law- 

 rence and perhaps in New England, but it has hitherto escaped the 

 notice of our algologists. 



Ch.etopteris plumosa, Kiitz. 

 Kikkerton Islands, July, 1878. " Rarely found on shore, and then 

 mostly on kelp. In nine fathoms, head of Gulf of Cumberland, fron; 

 a crack in the ice, Feb. 24, 1878." (Kumlien.) 



Sphacelauia auctica, Harv. 

 Gulf of Cumberland (Kumlien). 



EcTOCARPUs LiTOUALis, Ilarv. 

 All the Ectocarpi collected at Ungava Bay, as well as those from 

 the Howgate Expedition, belong to the subgenus Pylaiella, and are to 

 be included under Kjellman's Pyl. litoralis. Among the Howgate 

 Algae under the name of Ect. Farlowii is a form called var. robustus 

 of Ect. litoralis in the Marine Algie of New England, and a speci- 

 men in poor condition which may possibly be placed in Ect. Lands- 

 burgii, Harvey. 



CHLOROSPORE^. 



Cladophora arcta, Ilarv. 

 Kikkerton Islands, Gulf of Cumberland. " Conspicuously abun- 

 dant, especially in sandy places." (Kumlien.) 



Cladophora glaucescens, Harv. 

 Ungava Bay (Turner-). 



Cladophora gracilis, Kiitz. ? 

 Ungava Bay. Three specimens, no. 790, 798, and 801, appear to 

 belong to this species, but I am by no means certain. 



Ulothkix flacca, Thuret. 

 Annanactu Harbor (Kumlien). 



MoNOSTROMA Blyttii, Wittrock. 

 Ungava Bay (Turner). A few fine specimens undoubtedly belong- 

 ing to this species. 



