FRESHWATER ALG^ OF THE WEST INDIES. 281 



gattung Bhizoclonium" Verhand. zool.-hot. G-esellsch. Wien, 1593, 

 p. 578. 



Yar. tortuosum, Stock m. in Verh. zool.-hot. G-eselhch. Wien, 

 1890, p. 583. Ehizoclonium tortuosum, Kuetz. Page. Germ. 

 p. 205 ; Spec. Algar. p. 381. 



Short lateral branches entirely absent ; cell-membrane lamel- 

 lose. 



Crass, fil. 25-32*5 ^ ; crass, membr. cell. 3*5-5'5 p.. 

 , Hah. Growing in small stream, Eoseau Valley, Dominica. 

 No. 1176. 



Ord. Conjugate. 

 Fam. Zygxemace^:. 



*G. MOUGEOTTA Sp. 



Crass, cell, veget. S'Q fi. 



Sab. On leaves in warm stream, road to Eoseau Lake, Domi- 

 nica (2500 ft.). No. 1178. 



*7. Ztgnema ERTCETORU3I, Hansq. in Archiv Naturw. Lan- 

 desdiirchf. von B'6h?nen, Bd. vi. 1888, pp. 155-6. Zygogonium 

 ericetorum, Kuetz. Phgc. gener. 18 13, p. 280. 



Crass, cell, veget. 16-22 p. 



Hah. On bank, road to Lake, Dominica. Xo. 1222. In 

 stream, "Wotten Waven, Dominica. No. 121S. On ground, 

 crater, Grande Soufriere, Dominica. Nos. 1835 and 1810. 



*8. Spirogtra neglecta, Kuetz. Species Algar. 1819, p. 411. 

 Zygnema neglecta, Hass. Brit. Freshw. Alg. 1815, p. 142, 

 t. 23. ff. 1, 2. 



Yar. terxata, West $ G. S. West, " Welw. Afric. Freshw. 

 Alg." Journ. Bot. xxxv. 1897, p. 41. S. ternata, Ripart, in 

 Bull. Soc. Bot. Fr. xxiii. 1876, p. 162. 



Crass, cell, veget. 44-57 p ; long, zygosp. 84-100 p ; lat 

 zygosp. 48-54 /x. 



Hah. In stream, Wotten "VVaven, Dominica. No. 1248. 



*9. Choaspis stictica, O. Kuntze, Bevis. Gen. Plant. 1891, 

 p. 887. Conferva stictica, Engl. Bot. Choaspis serpentaria, 

 S. F. Gray, Arrangement Brit. PI. 1821, vol. i. p. 299 (nomen 

 prius). Sirogonium sticticum, Kuetz. 



