286 MESSES. YV. AND G. S. WEST ON THE 



Earn. Sieosiphoniace^;. 



32. Hap alo siphon intbicatus, JFes^, " Alg. from West 

 Indies" Journ. Linn, Soc, JBot. vol. xxx. (1894) p. 271-2, t. 15. 

 ff. 16-28 ; West Sf G. S. West, " Welw. Afric. Freshw. Alg.," 

 Journ. Bot. xxxv. L897, p. 242. 



Hab. In stream, Wotten Waven, Dominica. No. 1249. 



33. Stigonema hobmoides, Born, et Flah., " Bevis. de Nostoc. 

 Heterocyst." Ann. Set. Nat. 7 e serie, Bot. vol. v. (1887) p. 69. 

 Scytonema hormoides, Kuetz. Sirosiphon brevis, Kuetz. in Bot. 

 Zeit. 1847, p. 196 ; Tab. Bliyc. ii. p. 10, t. 34. f. ii. Sirosiphon 

 hormoides, Kuetz. Spec. Algar. p. 316 ; Tab. Phyc. ii. p. 10, t. 34. 

 f. iv. 



Crass, fil. 10-14*5 /x. 



Hab. Abundant on banks, Morne Micotrin, Dominica. No. 

 1109. On roadside and on bank, near Eoseau Lake (2700 ft.), 

 Dominica. Nos. 1160 and 1180. On rocks, Castle Bruce Eiver, 

 (2000-3000 ft.), Dominica. No. 1697. 



34. S. minutum, Hass. Brit. Freshw. Alg. i. p. 230, t. 67. 

 ff. 3-4 ; Born, et Flah. I. c. pp. 72-74. 



Hab. In stream, Wotten Waven, Dominica. No. 1249. 



*35. S. ocellattjm, Thur. in Ann. Sc. Nat. 6 e ser. Bot. i. 

 (1875) p. 380. Sirosiphon ocellatus, Kuetz. Spec. Algar. p. 317 ; 

 Tab. Bhijc. ii. p. 11, t. 37. f. ii. 



Hab. On rocks, Castle Bruce Eiver (2C00-3000 ft.), Dominica. 

 No. 1697. 



Earn. Scytonemace-E. 



36. Miceoch^ta tentjissima, West, "Alg. West Ind.," Journ. 

 Linn. Soc, Bot. vol. xsx. (1894) p. 269. 



Hah. "With the preceding species. 



37. Scytonema ambiguum, Kuetz. Spec. Algar. p. 894 ; Tab. 

 Bhyc. ii. p. 7, t. 26. f. ii. 



Crass, fil. 10'5/x; crass, tricli. 27-3 /z. 



Hab. On bank near summit, Couliabon (3700 ft.), Dominica. 

 No. 1899. 



