256 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Maria, P. & B. Near Kingston, Duerden. Closely covering ledges in 

 rather shallow water, also washed ashore. Chitty. 



L. perforata Mont. Densely carpeting rocks in shallow water, Mon- 

 tego Bay, July, 1900, P. & B. P. B.-A., No. 794. 



L. tuberculosa var. gemmifera (Harv. ) J. Ag. Washed ashore. Mo- 

 rant Bay, Annotto Bay, 1894 ; Ora Cabessa, July, 1900, P. & B. 



Choudria Baileyana Harv. Hope Bay, July, 1900, P. & B. No. 

 336, no locality, H. 



C. dasyphylla (Woodw.) Ag. Washed ashore, Port Antonio, July, 

 1891 ; Montego Bay, June, 1900, P. & B. 



C. tenuissima (Good. & Woodw.) Ag. Washed ashore, on sandy 

 beach, Montego Bay, June, 1900, P. & B. 



Acanthophora Thierii Lamour. Common on rocks in Kingston Har- 

 bor, Port Maria, Nos. 176, 195, 278, 377, H. Port Antonio, July, 

 1891, P. & B. Near Kingston, Duerden. 



Digenea simplex (Wulf.) Ag. In tufts on rocks. Port Maria, March 

 16, 1893, No. "252 ; on stones in shallows, St. Ann's Bay, March 30, 

 1893, No. 334, H. Washed ashore, Orange Bay, 1894; Manchioneal, 

 July, 1900, P. & B. Near Kingston, Duerden. 



Polysiphonia cuspidata J. Ag. In tufts on piles at beach, Port Maria, 

 March 16, 1893, No. 251 ; on stones in shallow water, St. Ann's Bay, 

 March 30, 1893, No. 335, H. Port Antonio, Aug., 1894, covering 

 rocks in shallow water; Manchioneal, Port Morant, 1900, P. & B. 



P. ferulacea Suhr. In dense tufts on rocks and eel-grass, Rio Novo, 

 June, 1900, P. & B. Near Kingston, Duerden, a slender, long-jointed 

 form. 



P. Havanensis Mont. On mangrove roots, Port Antonio, March 8, 

 1893, No. 214; on other algae, Kingston Harbor, Apr. 8, 1893, Nos. 

 374b, 375, H. Washed ashore, Montego Bay, Port Antonio, 1900, 

 P. & B. Near Kingston, Duerden. 



P. Havanensis var. Binneyi (Harv.) J. Ag. Port Antonio, July, 

 1891, P. &B. 



P. Pecten- Veneris Harv. On other Florideae, Port Maria, March 17, 

 1893, No. 276, H. 



P. secunda (Ag.) Zan. On other algae, Kingston Harbor, Apr. 8, 

 1893, No. 374, H. Washed ashore, Borden, Morant Bay, 1894, 

 P. &B. 



P. subulata (Duel.) J. Ag. Washed ashore, Montego Bay, June, 

 1900, P. & B. 



Only two specimens collected of this species, which has not before 



