COLLINS. — THE ALGAE OF JAMAICA. 249 



of form and thickness mentioned above ; otherwise it agrees with typical 

 S. vulgare. 



S. vulgare var. foliosissimum (Lamour.) J. Ag. Washed ashore, Port 

 Antonio, July, 1891, P. & B. 



Spatoglossum Schroederi (Mert.) J. Ag. Two specimens only, washed 

 ashore on sandy beach with high surf, near lighthouse, Kingston harbor, 

 July, 1900, P. & B. Chitty. 



Stypopodium lobatum (Ag.) Kuetz. Washed ashore, Port Maria, 

 March 10 and 19, Nos. 231 and 286; St. Ann's Bay, March 23, 1893, 

 No. 311, II. Annotto Bay, July, 1891 ; Montego Bay, June, 1900, P. 

 & B. P. B.-A., No. 777. 



"Stypopodium lobatum grew in magnificent clumps of two sorts, one 

 with the frond narrowly divided and heavily marked with dark bars, mak- 

 ing the plant resemble bunches of turkey feathers ; the other with fronds 

 of broader divisions and not so prominently barred. The first mentioned 

 form grew deeper down in the water, so deep as to have to be pulled off 

 by the boatmen by means of a long handled boat-hook. The two forms 

 were plainly distinguished as they grew in the water." 



Gymnosorus variegatus (Lamour.) J. Ag. Kingston, Montego Bay, 

 1900, P. & B. P. B.-A., No. 778. 



" Gymnosorus variegatus grew with Padina, which it resembled in 

 manner of growth, being in shape like clusters of short-stemmed morning 

 glory flowers. It formed a covering to the rocks nearer shore than the 

 Stypopodium, the water being about knee deep. G. variegatus is reddish 

 brown in color, Padina gray, Sargassum and Turbinaria rich yellow 

 brown ; Dictyota a darker brown with less yellow ; Stypopodium gen- 

 erally grayish brown with dark markings. The contrasting colors were 

 very rich in the water." 



Padina Durvillaei Bory. On rocks, Port Antonio, Feb. 28, 1893, No. 

 173, H. Port Antonio, July, 1891 ; Ora Cabessa, Montego Bay, 1900, 

 P. & B. Near Kingston, Duerden. The P. Pavonia of Murray and 

 earlier lists is probably this species. 



Dictyopteris delicatula Lamour. In tufts on rocks, Port Maria, March 

 19, 1893, II. Washed ashore, Annotto Bay, Aug., 1894; Hope Bay, 

 Kingston, 1900, P. & B. P. B.-A., No. 485. 



D. Justii Lamour. Washed ashore, Port Antonio, July, 1891 ; Morant 

 Bay, Annotto Bay, Aug., 1894; Kingston, 1900, P. & B. In tufts on 

 rocks, Port Maria, March 17, 1893, No. 264, H. Chitty. 



D. plagiogramma Mont. Annotto Bay, July, 1894, washed ashore, 

 P. & B. Chitty. 



