Vol.1] SefcheU-Gardiiet'. — Ahf(B of Northwestern America. 223 



Rhizoclonium tortuosum Kuetzing. 



On other alga? in the middle litoral zone. Uyak Bay, Kadiak 

 Island. Alaska, W.A.S. and A.A.L., No. 5095!; Whidbey 

 Island, Wash., X.L.G.. Nos. 428!, 670! 



Cladophora crispata f. vitrea (Kuetzing) Rabenhorst. 



Fresh water. University Boat House, Lake Washington, 

 Seattle, Wash., Tilden, No. 277! 



This form is quoted as Miss Tilden has given it. There are 

 no authentic specimens accessible, either to Mr. C'ollins or to 

 ourselves, and the specimens must be left for further study. 



Cladophora glomerata (L.) Kuetzing. 



Lake Scheveltza. Vancouver Island, B.C., Hdrveij (1862, 

 p. 177). 



We have no knowledge of the occurrence of this species in our 

 territory except that conveyed l)y the reference quoted. 



Cladophora callicoma Kuetzing. 



Attached to floating logs. Lake Washington, Seattle, Wash., 

 N.L.G., Nos. 507!, 508!, and in Collins, Holden and Setchell, 

 P. B.-A., No. 919!. \] .A.S. and A.A.L.. No. 5212! 



A fresh water species, determined by Mr. Collins. Dr. Bornet 

 has written that tlu^ specimen distributed under Collins, Holden 

 and Setchell. P. B.-A., No. 919, seems to him to be C. (/lomerafa 

 t. macrogonyd (Lyngliye) Rabenhorst. 



Cladophora cartilaginea (Ruprecht) Harvey. 



Unalaska, Alaska, Ruprecht (1851, p. 404 under Conferva 

 cartilaginea) . 



Cladophora saxatilis (Ruprecht) DeToni. 



On rocks in the lower part of the litoral zone. Near Friday 

 Harbor, San Juan Island, Wash., X.L.G., Nos. 207!, 220!, 

 Tilden, No. 279 ! (under C. arcta) ; Channel Rocks, west of Seattle, 

 Wash., X.L.G., Nos. 355!, 309!, and in Collins, Holden and 

 Setchell, P. B.-A., No. 921!; Ludlow Bay, Wash., X.L.G., 

 Nos. 440!, 513! 



The determination of the al)ove are all ))y Mr. Collins, who 

 adds that Tilden, No, 375, is not C. saxatilis, probably not even 



