42 ERYTHEA. 



broader and its cross section is not rectangular as is the case 

 in A. esGulenta of the European coast (cf. Kjellman, 

 Algae of the Arctic Sea, PI. 25, f. 19, 1883) and of the New 

 England coast. In breadth, and in cross section of midrib, the 

 Californian form closely resembles the A. laticosta Kjellm. 

 of Behring Sea but the sporophylls are broader and distinctly 

 margined. 



^ Alaria fistidosa P. & R. is a very large species, the largest 

 in the genus, characterized by its broad swollen midrib, con- 

 stricted at intervals. This species is characteristic of Behring 

 Sea and fragments of the blade 20 to 30 feet long are brought 

 from there in collections. De Toni quotes Dr. C. L. 

 Anderson as authority for the occurrence of this northern 

 species on the Californian coast. A fragment supposed to be 

 of this species was collected at the Farallones Islands by Mr. 

 Blankinship (cf. Zoe, 3; 148, 1892) but Dr. Anderson writes 

 that the specimens of algae were in poor condition when 

 they reached him and the writer is unable to find that any 

 specimen of this species was preserved. The occurrence of 

 this species at the Farallones, if confirmed, will be an inter- 

 esting fact in the geographical distribution of the Arctic 

 species. 



Under Pterygophora Californica Eupr., De Toni has quoted 

 Areschoug in giving " Vera Cruz, California " instead of 

 Santa Cruz and he has done the same thing under Eisenia 

 arhorea Aresch., Postelsia palmaeformis Rupr., and Lam- 

 inaria Andersonii Farlow. 



Eisenia arhorea Aresch. is said by its namer to have 

 been found at San Francisco by Dr. Gustave Eisen. Dr. 

 Eiseu however kindly informs me that it was collected by 

 him at Santa Catalina. Dr. Anderson finds it at Santa Cruz 

 in company with Nereocystis grigran/ea Aresch., blown in from 

 the South after southerly winter storms but never growing in 

 the neighborhood. It is, therefore, a decidedly southern 

 species having been found also at San Diego by Mr. Cleve- 

 land and Professor Eigenmann and by the writer, growing 

 in great abundance just below low water mark at Redondo 

 and San Pedro during the last Christmas holidays. Almost 

 all stages of growth were represented in the writer's 

 collections. 



