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Chrysymenia Uvaria (L.) J. Ag. 



J. Agardh, "Algae maris Mediterranei et Adriatici", p. 106; 

 "Epicrisis", p. 324; "Florideernes Morphologi", tab. XVI, fig. 20—22. 

 Harvey, "Nereis Bor.-Am.", Part II, p. 191, pi. XX, B, fig. 1—3. 



Only sterile plants were found. 



As to the anatomy, the vesicles consist of a layer of larger 

 membrane cells (Fig. 10 A, B), and these are densely covered by 

 the bark-cells (Fig. 10 C). When the innermost large membrane- 

 cells are seen from the surface they appear polygonal, in transverse 

 section roundish-oblong. Towards the cavity in the interior of the 

 vesicle the large membrane-cells here and there, but rather regularly 



Fig. 10. Chrysymenia Uvaria (L.) J. Ag. 



A, transverse section of the membrane, the uppermost cell with a gland (70:1). U, mem- 

 brane cells seen from the inner side, some of the cells bearing glands (70 : 1). C, bark- 

 layer seen from above (150 : 1). 



dispersed, bear gland-cells (Fig. 10 B). These are always solitary 

 placed one in the middle of each cell; in shape they are nearly 

 spherical (Fig. 10 A). All my material was, as mentioned above, 

 sterile but in Oilman ns' "Morphologic und Biologle der Algen", 

 vol. I, p. 653, a transverse section of a tetrasporic specimen is 

 reproduced after a drawing of Kuckuck. 



This species has been found in deep water only (12 — 15 fathoms) 

 in the Sound between St. Thomas and St. Jan near the Island 

 Gr. St, James and to the north of St. Jan in the sea between 

 St. Jan and Tortola, where it seems to occur in abundance. 



Coelarthrum Albertisii (Piccone) nob. 



In a collection of different living algae, which Dr. Th. Mor- 

 ten sen had dredged in the sea north of St. Jan and which he 



