358 CATALOGUE OF MARINE AhGM OF WEST INDIAN REGION. 



Explanation of Plate 185. — Fig. 1, superficial view of the marginal portion of 

 a frond (epidermis omitted) kept in darkness overnight, showing the chlorophyll 

 in merostrophe x 4'JO. Fig. 2, two cells from the injured part of a frond after a 

 night's darkness ; most of the grains are apostrophised x 40;). Figs. 3 — 6, 

 diagrams illustrating photolysis : 3, medium diffused-light position of chloro- 

 phyll (epistrophe) ; 4, night position (merostrophe) ; 5, permanent effect of 

 strong diffused light, and temporary of sunlight (apostrophe) ; 6, effect of con- 

 tinued sunlight and diffused light of the highest quality (sy strophe) . Fig. 7, 

 the photrum of L. trisulca on a bright September day, showing the epistrophion, 

 apostrophion and systrophion. 



CATALOGUE OF THE MARINE ALG/E OF THE 



WEST INDIAN REGION. 



By George Murray, F.L.S. 



» (Continued from p. 33H.) 



II. PMOPHYCE.E. 



FuCACEiE. 



Saboassum incisifolium J. Ag. Guadeloupe, Mazi ! 



Geogr. Didr. Capo of Good Hope. 

 S. polyphylluji J. Ag. Guadeloupe, Maze ! St. Thomas, Huhenm-k ! 



Geogr. Distr. Pacific. 

 S. angustifolium Ag. Grenada, Murray ! Guadeloupe, Maze ! 



Gevijr. Didr. Indian Ocean. 

 S. filipendula Ag. Gulf of Mexico (fide J. G. Agardh). Florida, 



S. pentifolium Ag. Florida (fide Farlovo in U. S. Com. Fish. Report, 



1876, p. 706). 

 Geogr. Didr. Red Sea. 

 S. pteropleuron Grunow. Bahamas, ' tfovara.' Florida, Palmer ! 



(in Farlow, Anderson and Eaton, No. 104). 

 b. hystrix J. Ag. Gulf of Mexico (fide J. G. Agardh). 



Geogr. Didr. Atlantic (N. America), 

 b. platycarpum Mont. Grenada, Murray 1 Barbadoes. Dickie? 



Guadeloupe, Maze] Martinique, Duperreg. "Ad alias 

 msulas Indue occidentals (Mus. Petropolit. !)," J. G. Ag. 

 Geogr. Didr. Warm Atlantic, 

 b. Libbmanki J. Ag. Guadeloupe, Maze I 



Geogr. Didr. Pacific (Mexico). 

 b. JJesfon ! MNEsn Ag. Guadeloupe, Maze ! " Ex insulis Indite 



occidcntatis," ///>. Binderl J. G. Ag. 

 b. iaHMGMHJM Ag. Guadeloupe, Maze ! Cuba, R. de la Sagra. 



Bermuda, Rein. 

 Var. fissifouum Harv. Bermuda, Bent, 



Geogr. Didr. Atlantic (Senegambia, Ascension, Teneriffe). 



b. cyuosum Ag. Barbadoeg, Dickie \ Guadeloupe, Maze I Cuba, 



R. de la Sagra. 



Var. bicHOTOMDM Mont. Guadeloupe, Maze I 



Geogr, Didr. Warm Atlantic (Brazil and Africa). 



