54 ERYTHEA. 



credited to the United States by Gomont on tlie authority of speci- 

 mens collected by Farlow, Collins and Holden. It was distributed by 

 WoIIe, presumably from Pennsylvania, under the name of Oscillaria 

 Froshlichii and its variety vlride. Tiie species has been found in 

 several places in California by Messrs. Howe, Parish, McClatchie, 

 and the writer, and in Minnesota by Miss Tildeu (cf. No. 72 

 American Algse). 



Sp'truUna major Kuetz. is not credited to the United States by 

 Gomont, but has since been found in California by Pnrish and 

 McClatchie, in South Dakota by Saunders (cf. Phyc. Bor.-Amer., 

 No. 501), and has been distributed from Minnesota by Miss Tilden 

 under the name of 6)3. subsalsa (cf. American Algae, No. 79). 



Chroococcus turgidus (Kuetz.) Nseg. is undoubtedly common all 

 over California, having been collected in a number of widely sepa- 

 rated localities by the writer and by others. It occurs in fresh, 

 brackish, and even in somewhat alkaline waters. 



Gomphosphceria aponina Kuetz. has been collected in California, 

 near Los Angeles, by Miss Sarah P. Monks. 



Pleurocapsa fuliginosa Hauck, known from Europe anrl New 

 England, has been found in abundance by the writer at San Fran- 

 cisco, on the piles of the wharf at the Life Saving Station at the 

 Presidio, on old timbers at Alameda, and upon smooth rocks at 

 Carmel Bay, in Monterey County. It has not been credited to the 

 Pacific Coast before. 



Xenococcus Schousbcei Thuret occurred to the writer at Carrael 

 Bay in Monterey County, growing abundantly on the filaments of 

 Calothrix Crustacea Thuret. 



Dermocarpa prasina (Reinsch) Bornet occurs upon various algse 

 on the coast of California. Species of Dermocarpa are very com- 

 mon, but have not, as yet, been at all carefully collected and 

 studied. The most common one, however, seems to be D. 'prasina. 



Hyella ccBspitosa B. & F. does not seem to be at all common on 

 the coast of California, at least as compared with the coasts of 

 Europe and New England. It does occur, however, in abundance, 



