1915] Collins,— Algae from the Chincha Islands 95 
suppose that there was any intentional deception, but allowance must 
always be made for the possibility of mistakes of this kind in older 
collections of amateurs, who have received specimens from foreign 
correspondents. I think we can safely ignore the “Boston Bay" 
reference, and consider that the species is not known on the western 
side of the Atlantic. PIN 
As regards the west coast of the Pacific, De Toni! records P. 
coccineum “Hab. ad Enoshima (K. Okamura n. 18)," but later? 
under P. coccineum makes no mention of Japanese localities and no 
reference to the earlier paper under this species. Okamura ? figures 
P. leptophyllum Kütz. var. flexuosum J. Ag. with reference to De Toni, 
Syll. Alg., Vol. IV, p. 589, and synonym P. coccineum var. flexuosum 
Harvey. It seems safe to conclude that P. coccineum is limited to the 
east shore of each ocean. As to the suggestion of De Toni, l. c., p. 
591, that the Californian plant should be placed under P. leptophyllum 
Kiitz., it is negatived by the fact that the plants distributed as P. 
B.-A., No. 994. b, representing the broad form common on the Cali- 
fornia coast, have branched sporophylls, in the form characteristic 
of P. coccineum, not the simpler form of P. leptophyllum. 
NITOPHYLLUM CRYPTONEURON (Mont.) De Toni. A small frond, 
attached to Polysiphonia. 
* POLYSIPHONIA sp.? A rather coarse form with short segments and 
four pericentral cells. In habit it somewhat suggests Streblocladia 
camptoclada (Mont.) Falk., but is evidently monopodial. I do not 
recognize it by the habit, and it adheres so closely to the paper that 
microscopic examination is difficult. 
PTEROSIPHONIA DENDROIDEA (Mont.) Falk. A well developed 
plant, about 10 em. high, which is rather large for this species; not in 
fruit. 
STREBLOCLADIA SPICATA M. A. Howe. "Primary branches longer 
and better developed than in the type." Note by Dr. Howe. 
PLEONOSPORIUM VENUSTISSIMUM (Mont.) De Toni. With poly- 
spores. 
CERAMIUM RUBRUM (Huds.) Ag. A small plant, about 3 em. 
high, with tetraspores. Cortication uniform, segments short, apices 
strongly forcipate, but not involute. 
1G. B. De Toni, Phyceae Japonicae novae, Mem. Roy. Ist. Venet., Vol. XXV, 
No. 5, p. 29, 1895. 
2 Id., Sylloge Algarum, Vol. IV, Sect. II, p. 577, 1900. 
! K. Okamura, Icones of Japanese algae, Vol. III, p. 14, Pl. CIII, figs. 6-7, 1913. 
