COLLINS. — THE ALGAE OF JAMAICA. 257 



been reported from America. These agree well with specimens from 

 the Mediterranean. The range of this species, as previously known, has 

 been from the English Channel to Spain, the northern shore of the 

 Mediterranean and the Adriatic. 



Lo{)hosiphonia obscura (Ag.) Falk. Covering stones in shallow water, 

 Manchioneal, July, 1900, P. & B. 



Bryothamnion triangulare (Gmel.) Kuetz. In great tufts in pools, 

 Port Maria, March IG, 1893, Nos. 254 and 277, H. Washed ashore, 

 Annotto Bay, Aug., 1894; Ora Cabessa, June, 1900, P. & B. Chitty. 

 P. B.-A., No. 95. 



B. Seaforthii (Turn.) Kuetz. Washed ashore, Port Antonio, July, 

 1891 ; Kingston, July, 1900, P. & B. 



Bostrychia tenella (Vahl) J. Ag. Port Antonio, on rocks reached 

 only by spray, July, 1891, and 1894 ; Manchioneal, similar locality, July, 

 1900, P. & B. P. B.-A., No. 796. 



B. Mazei Crouan. In dense tufts on rock, Port Antonio, Feb. 23, 

 1893, No. 158, H. 



B. Moritziana var. intermedia J. Ag. On rocks, shore of island. 

 Port Antonio, Aug., 1894, P. & B. 



" The Bostrychias grew upon rocks and ledges, usually above water, 

 but dashed by spray." 



Murrayella periclados (Ag.) Schmitz. On mangrove roots, Port An- 

 tonio, March 8, 1893, No. 215; in dense tufts on wood, St. Ann's Bay, 

 March 24, 1893, H. Manchioneal, July, 1900, P. & B. P. B.-A., 

 No. 795. 



Amansia multifida Lamour. Washed ashore, Morant Bay, Annotto 

 Bay, July, 1894 ; Rio Bono, Rio Novo, Kingston, 1900, P. & B. 

 P. B.-A., No. 94. P. U., No. 708. 



Dasya arbuscula (Dillw.) Ag. Washed ashore, Montego Bay, July, 

 1900, P. & B. 



D. Gibl)esii Harv. Washed ashore, Port Antonio, Aug., 1894, P. & 

 B. 



D. mucronata Harv. Washed ashore, Morant Bay, July, 1894, P. 

 & B. 



Heterosiphonia Wurdemanni (Bailey) Falk. On Gelidium rigidum, 

 No. 276, H. Annotto Bay, Aug., 1894, P. & B. 



Dictyurus occidentalis J. Ag. Annotto Bay, Aug., 1894; Kingston, 

 near the lighthouse, July, 1900, P. & B. Always washed ashore, never 

 in large quantity, usually only a fragment here and there. P. B.-A., 

 No. 797. 



VOL. XXXVII. — 17 



