IUKMIU \li:K MJQM OF Mil. BOI III (IKKNKYS 



OSC1LI..II<U!1ACBJS. 



46. OSCILLATORIA BRKviN l\'"t:. , < >"mont, OscillarMa, Ann. Set. Nat., Hot., xvi.. 

 p. 24'.. pi. vii., tigs. 14-15. 

 Sample 10, rather rare. 



17. i isi IM.ATORIA SPLKNDIDA, Grer. ; Gomont, OsciUarMe*, Ann, Set. Nat., Bot., xvi., 

 l. _'. pi. vii., figs. 7-8. 

 Sample 10, rather rare. 



48. OSCILLATORIA scBTinssiyA, Kiitz., Tab. Phyc., i., 1845-49, p. 27, tab. xxxviii., 

 fig. 7. 



Sample 10, rather rare. 



49. OSCILLATORIA TKNDIS, Ag. ; Gomont, OscillarMca, Ann. Set. Nat., Bot., xvi., 

 p. 240, pi. vii., figs. 2, 3. 



Samples 10, 11, and 15, rather rare. 

 Forma sordida, Kiitz., was also present. 



50. SPIRULINA SUBTILISSIMA, Kntz., Phyc. gen., 1843, p. 183 ; Rabenh., Fl. Europ. 

 Alg., ii., 1865, p. 93 ; Gomont, OsciUari&t, p. 272, pi. vii., fig. 30. 



Sample 10, rather common. 



NOSTOCACE&. 



51. ISOCYSTIS INP08IONUM (Kiitz.), Bora, Nuov. (jwoj-n. bot. ital., x., 1878, p. 4G8. 

 Samples 8, 11, 13, 15, and 17, rather common. 



52. Nosroc MINUTISSIMOM, Kiltz., Phyc. gen., p. 204 : Rabenh., Fl. Europ. Alg., 

 ii., 1865, p. 162. 



Samples 10 and 11, rather common ; 1 and 3 (yellow snow !), rare. 



RlVULARIACEsE. 



53. CALOTHRIX .*RUGINEA, Thuret ; Bornet et Flahault, Nostocac&s hetfrocystbt, 

 1886-88, p. 358. 



Sample 14, isolated. 



Diam. cell =9-11 M. Only one group of filaments was seen, and the determination 

 is therefore somewhat doubtful. C. seruginea is a marine form, but the habitat from 

 which sample 14 came would be likely to harbour marine forms. 



E. DIATOMAC&E (Bacillariea). 



54. MKLOSIRA VARIANS, Ag., Consp., 1830, p. 64; Rabenh., Fl. Europ. Alg., i. 

 1864, p. 40. 



Sample 9, rather rare. 



