280 FEESHWATEll ALG^ FEOM THE WEST INDIES. 



Plate XIV. {continued). 



Fig. 16. Cerasterias staurastroides, n, sp. 520/1. 



Pigs. 17-24. Ekizoclonium Berggrenianum, Hauck, var. dominicense, n. Tar. 



520/1. , 

 Fig. 25. Cosmarium pseudojjyramidatum, Luud, * stenonotum, Nordst., 



f, minor, Racib. 520/1. 

 Fig. 26. Glceothece linearis, Naeg., forma. 520/1. 



Plate XV. 



Figs. 1-3. Hapalosiplion arhoreus, n, sp. 520/1. 



4-8. Stigonerna hormoides, Bornet et Flah., ysiY.'tcnue, n. var. 520/1. 

 h, beterocysts. 

 9-10. Aphanocapsa elachista, n. sp. 520/1. 

 11-15. Scytonema amhiguum, Kuetz. 520/1. 

 16-28. Hapalosiphon intricatus, n. sp. 520/1. 



Plate XVI. 



Figs. 1-7. Symploca aisjndata, n. sp. Fig. 1, natural size ; fig, 2, a very small 

 portion of cue of the erect fasciculi, 120/1 ; fig. 3, a specimen 

 sbowing tbree tricbomes in one sheatb, 120y 1 ; figs. 4 & 5, examples 

 witb two tricbomes in one sbeatb, 520/1 ; figs. 6& 7, tbe apices of 

 two filaments, sbowing in fig. 6 a broad sbeatb at tbe apex, and in 

 fig. 7 a narrow one, 520, 1. 

 Fig. 8. Tetrapedia trigona, n. sp. 830/1. 



9. Glceothece lunatum, n. sp. 520/1. 

 10. Eudorina stagnate, Wolle, var. 520/1. 

 Figs. 11-13. Glaocapsa gigas, n. sp. 520,1. Fig. 11, an example Laving the 

 cells with finely granulate walls ; fig. 12, one where tbe lamellte 

 round the cells are not visible. 

 14-16. Scytonema amphim, n. sp. 520/1. 

 Fig. 17. Chroococciis minor, Naeg. 520/1. 



18. ,, ,, f. minima. 520/1. 



19. schizodennaticiis, \\'est. 520/1. 



