Vol . n HetcJi ell— Gardner. — Algic of Northwestern America. 'I'll 



Urospora incrassata Kjellman. 



On rocks in the litoi'al zone. Whidbey Island, Wash. , X. L. (r. , 

 No. 185! 



ft 



The material seems to Mr. Collins to be of this species. 



Urospora Wormskioldii (Merteus) Roseuving-e. 



On small stones on exposed coasts. Near Victoi'ia, B. C 

 Tilden, No. 381! ; west shore of Whidbey Island, Wash., X.L.G., 

 Nos. 671!, 284!, and in Collins, Holden and Setchell, P. B.-A. 

 No. 915! ; San Jnan Island, Wash., X.L.G,, No. 208! 



Mr. Collins expresses the opinion that Miss Tilden's speci- 

 mens are too near the type to be separated under the varietal 

 name VdiiroHro'iaiui as she has done, and that Gardner's San 

 Jnan Island specimens represent a rather slender form. 



Chaetomorpha cannabina (Areschong) K.jellman. 



Lying- loose or entangled among other alg'a\ in pools, litoral 

 zone. Norton Sound, Alaska, R. C. McGregor, No. 5686! ; west 

 shore of Amaknak Island, Bay of Unalaska, Alaska, ir.A.*S'. (uk] 

 A. A./.., No. 8244! , and in Collins, Holden and Setchell P. B.-A., 

 No. 916! ; St. Paul, Kadiak Island, Alaska, ]] .A.S. and A.A.L., 

 No. 5141!; Seldovia, Cook Inlet, Alaska, Saunders (1901, p. 

 418); Orea, Alaska, W.A.H. and A.A.L., No. 5169!; Annette 

 Island, Alaska, Saxnders (1901, p. 418); Friday Harh(n-. San 

 .Inan Island. Wash., X.L.G., No. 219! 



Chaetomorpha duriuscula (Ruprecht) De Toni. 



Unalaska, Alaska, BuprecJit (1851, p. 404). 



De Toni (1889, p. 277) refers the Conferra duriuscula of 

 Ruprecht to the genus Chaetomorpha with more or less doubt. 

 We have not seen any plants attributed to this, but judging 

 from the description and the association, it is more likely to be 

 some fragmentary material of Cladophora, upon which the 

 species was founded. 



Chaetomorpha litorea Harvey. 



Sitka, Alaska, Ruprecht (1851. p. 899 nnder C/i. iortuosu 

 var. crassior) . 



Harvey (1857, \). 87) refers Ruprecht 's variety crassior of 



