Vol. ij ISetchell-Gardner. — Alg(e of ]\,'ortJiwf stern Aiiterica. '26o 



Costaria Turneri Greville. 



On rocks in the npper part of the sublitoral zone. Unalaska, 

 Alaska. Kxprerhf (ISo^, \). 26, nnder C. ([laKlyiiK rrin) -, Shnma- 

 gin Islands, Kukak Bay, Prince William Souiul. Yakntat Bay, 

 and Sitka. Alaska. Saunders (1901. p. 481); Sitka. Alaska, 

 Postels (Hid Rupreeht (1840, p. 12); Puget Sound, BuiJen and 

 Harveii (18G2. p. IGO) ; Victoria, B. C, Saunders (1901. p. 481) : 

 Esquiraalt, B. C, Harveif {IH62. p. 16G), ir.A.N.. Xo. 1S78! ; 

 Port Renfrew, B. C, Butler and Polley, No. 8; Whidhey Island 

 and elsewhere thronghont Pnget Sound. Wash., X.L.G., No. 

 87!, in Collins, Holden and Setchell. P. B.-A., No. XXXV!; 

 Tracyton. Kitsap County, Wash., Tilden. Xo. 288! (under C. 

 Merterisii) . 



So far as we know, the genus Costaria contains a single species, 

 the differences between C. Turneri and C. Mertensii being unstable. 

 C. quadrinervia Rupreeht is probably to be added, although we 

 searched carefully at Unalaska for such a form without success, 

 and, consequently, must judge from the description alone. It was 

 first collected by Menzies and described by Turner (1819. \)l. 226) 

 as Furus costatus. By a curious slip, Turner says on ]). 72. "on 

 the western coast of South America," while on \). 78, he says, 

 "Habitat in occidentalibus Americse Septentrionalis littoribus". 



Agarum Turneri (4rcville. 



On rocks in the sublitoral zone, usually found cast ashore. 

 St. Lawrence Island, Alaska, Kjellman (1889, p. 48): St. Paul. 

 Alaska, Rupreeht (18.")1, p. 244), Greeley and Snodgntss, y,o. 

 .■)794!, (Setchell, 1899, p. 592); Captains Bay, Unalaska, Alaska, 

 T^ .A.S. and A.A.L., No. 4088! ; Unalaska, Alaska. Postels and 

 Rupreeht (1840, p. 12. under A. pertusum, p. 11, under A. 

 Gmelini); Popof Island, Kukak Bay, Prince William Sound, and 

 Yakntat Bay, Alaska, Saunders (1901, pp. 480. 481, under A. 

 Turneri and A. Gmelini); Unga, Alaska, A.A.L.. Xo. .")().")7!, 

 J. B. Downing. Xo. r)787! ; Harvester Island in Uyak Bay, 

 Kadiak Island, Alaska, IT. A.N. and A.A.L., X"o. 5111! ; Kadiak 

 Island, Alaska, Postels and Rupreeht (1840, p. 12. under .4. 

 hrassicieforme) \ Y'akatat Bay, Alaska, Rev. Alhin 'lohnsoii. 

 No. 5178!; Sitka, Alaska, Postels and Ruprprht (l^W. \k 12, 

 under .4. platyneuron). 



