280 MESSKS. W. AND G. 8. WEST ON THE 
Class CHLOROPHYCE.E. 
Ord. CONFERVACER Is0oGAME. 
Fam. COXFERVACER. 
#1, MICROSPORA ABBREVIATA, Lagerh. in Bericht. Deutsch. 
Bot. Gesellsch. v. 1887, p. 417.—Conferva abbreviata, Rabenh. 
Krypt. Flor. v. Sachs. 1863, p. 246; Flor. Europ. Algar. ii. 
p. 323. 
Hab. On roadside near Roseau Lake, Dominiea (2700 ft.). 
No, 1160. 
#2. MICROSPORA PACHYDERMA, Lagerh. l. c.—Conferva pachy- 
derma, Wille, * Om Hvilecell. hos Conferva," Ofvers. af K. Vet.- 
Akad. Fórh. 1881, no. 8, p. 20. 
Hab. Onrocks,Castle Bruce River, Dominica (2000-3000 ft.). 
No. 1697. 
Fam. CHROOLEPIDACES. 
3. TRENTEPOHLIA VILLOSA, De Toni, Syll. Algar. 1. p. 239.— 
Chroolepus villosa, Kuetz. Phyc. gener. p. 284; Spec. Algar. 
p. 428. 
Crass. cell. veget. 18-22 u. 
Hab. On trees in woods round Roseau Lake, Dominica. 
No. 1164.—On trees, St. Aroment, Roseau, Dominica. No. 1254. 
A species was noticed on banks at Emsol, Roseau, Dominica. 
No. 986. The specimens were probabiy young forms of T. 
villosa. Branches few, short, and situated at long intervals 
along the primary filaments. ` 
Crass. fil. 18-20 u. 
*4. TRENTEPOHLIA sp. 
Specimens very fragmentary; thickness of cells 8 5-14^5 p, 
13 times longer than their diameter. 
Hab. Roseau Valley, Dominica, on bark. No. 1344. 
Fam. CLADOPHORACES. 
*5. RHIZOCLONIUM HIEROGLYPHICUM, Auetz. Phyc. gener. 
p. 205; Spec. Algar. p. 383; Stockmayer, “ Ueber die Algen- 
