276 MR. W. WEST OX SOME FEESHWATER 



40. Gi-LtEOCAPSA MURALTS, Kuetz. {TahulcB phycolog. \. t. 21. 

 f. i. ; Rahh. Fl. Europ. Alg. ii. p. 36.) 



Long. cell. s. teg. 5*5-7'5 fx ; lat. cell. s. teg. 2'5-3 /x ; diam. 

 fam. 19-25 /u. 



Hab. Ou damp wall of dam, Sharp's Elver, St. Yincent. 

 ]S^o. 477. 



The cells were longer in relation to their breadth than those 

 figured by Kuetziug {I. c). 



41. a. GiGAS, nov. sp. (PI. XVI. figs. 11-13.) 



G. familiis solitariis vel subaggregatis ; cellulis magnia, subglo- 

 bosis vel oblongis, 4-36 in familiis subglobosis consociatis, mem- 

 brana cellularum Igeva vel subtiliter granulata (vide fig. 11), 

 cytioplasmate serugineo et granuloso ; tegumentis subglobosis, 

 ad exteriorem duris saepe subrugosis, luteo-fuscesceutis, lameliis 

 extra cellulas indistinctis, paucis et pallido luteolis. 



Diam. cell. s. teg. 9-15 fj, (plerumque 11 jj) ; diam. fam. 

 U-115 fj. 



Hab. On damp wall of dam, Sharp's Hiver, St. Vincent. 

 No. 477. 



This occurred amon^Bt J^osfoc sphce}'icum,Yiiuch., in no definite 

 stratum ; and it is sufficiently distinguished by its large cells and 

 other characters. 



42. Gl(eocapsa, sp. 



Crass, cell. s. teg. 2-3 yu. Nos. 23 and 24. 



43. Gl(eocapsa, sp. 



Crass, cell. s. teg. l'5u. No. 546. 



44. Aphanocapsa elachtsta, nov. sp. (PI. XV. figs. 9, 10.) 

 A. tegumento minutissirno, subgloboao, firmo, gelatinoso non 



lamelloso, achroo ; cellulis minutissiiuis, sphaericis, solitariis gemi- 

 natisve, laxe dispositis ; cytioplasmate homogeneo et teruginoso ; 

 tegumentis non aggregatia in thallo distincto. 



Diam. cell. l'5-l*8/u (usque ad 2 fi) ; diam. teg. 26-38 /u. 



Hab. On trees, summit of Trois Pitons (4500 ft.), Dominica. 

 No. 903. And in stream, Grande Soufriere, Dominica. No. 884. 



This species seems characteristically distinct by reason of its 

 minute cells in the very small globose colonies, which were 

 scattered amongst other algae. 



45. Glceotiiece linearis, ]}^aeg. {Oattung, einzelh Alg. p. 58, 

 t. 1 G. f. 2 ; liabh. FL Eitrop. Alg. ii. p. 60.) 



