COLLINS. — THE ALGAE OF JAMAICA. 247 



1893 ; Port Maria, March 20, 1893, No. 295, H. On rocks in shallow- 

 rough water, Montego Bay, June, 1900, P. & B. "Fronds smooth and 

 transparent, as if made of thin green glass." 



V. verticillata Kuetz. On rocks in shallow water, Port Morant, 

 Manchioneal, July, 1900, P. & B. 



Siphonocladus membranaceus (Ag.) Bornet. Growing in mats on 

 rocks, near shore, Port Antonio, Aug., 1894 ; Runaway Bay, June, 

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



S. tropicus (Crouan) J. Ag. "Washed ashore, Morant Bay, July, 

 1894, P. & B. 



Dictyosphaeria favulosa (Ag.) Decsne. On rocks in shallows. Port 

 Antonio, March 3, 1893, Nos. 205 & 271, H. On coral reef, Port 

 Antonio, July, 1891, P. & B. P. B.-A., No. 124. 



Chamaedoris anuulata (Lam.) Mont. Washed ashore, Morant Bay, 

 July, 1894, P. & B. 



Microdictyon umbilicatum (Velley) Zan. In dense tufts. Port Anto- 

 nio, Feb. 27, 189.3, No. 174, H. 



Anadyomene stellata (Wulf.) Ag. In tufts on rocks. Port Antonio, 

 Feb. 27, 1893, H. Similar localities, Port Antonio, July, 1891 ; Kings- 

 ton, Port Morant, July, 1900, P. & B. P. B.-A., No. 169. 



Acetabularia crenulata Lamour. Port Antonio, Annotto Bay, Aug., 

 1894 ; Rio Novo, June, 1900, P. & B. Near Kingston, Duerden. P. 

 B.-A., No. 125. 



" At Annotto Bay Acetabularia and Dasycladus grew in water nearly 

 to our shoulders, not very rough, on cobble stones, the two species grow- 

 ing together like minute forests covering the stones." 



Dasycladus clavaeformis (Roth) Ag. In tufts on rocks, Port Maria, 

 Apr. 19, 1893, No. 285, H; Annotto Bay, with the preceding species; 

 on pebbles washed ashore, St. Ann's Bay, 1900, P. & B. P. B.-A., 

 No. 170. 



Botryophora occidentalis (Ilarv.) J. Ag. In salt pools, Palisadoes, 

 Kingston Harbor, April 10, 1893, No. 386, H. Port Antonio, Aug., 

 1894, P. & B. 



Neomeris dumetosa Lamour. Kingston Harbor, on mangrove roots, 

 July, 1900, P. & B. "Looking like small green worms." 



Cymopolia barbata (L.) Lamour. In tufts on stones, St. Ann's Bay 

 and Port Maria, March, 1893, H. On coral reef, Port Antonio, Annotto 

 Bay, 1891 & 1894, washed ashore ; Kingston, Port Morant, 1900, P. & 

 B. Near Kingston, Duerden. P. B.-A., No. 28. P. U., No. 674. 

 Sloane. 



