OaciUatorut\ xxi. lyngbye/E (Wr-i). 
The specimens of this species are very fine : it is a totally distinct 
plant from Phormidinm angustissimum, though il is of tin same thick- 
ness. It possesses no sheath, and the trichomes are muoh firmer and 
not so tortuose as those of the latter ; its cells also an Bhorl 
more indistinct. 
XXII. CHAM.Ksll'lloXll.lv 
1. SPHJEROGONIUM Rostaf. (1883). 
1. S. incrustans Rostaf. in Rosprawj 8prawozd.Posiedz.Akad. 
Dmiej. -x. 282, 304 5, t. v. f. 1 7 (1883); \\ . el G. 8. West 
Journ. Bot, 1897, p. 301. 
ChamcBsiphon incrustans Grun. in Rabenh. Plor. Eiirop. AL r 
ii. 149. 
PuNGO ANDONGO. — Epiphyticum supra Zygnema ericetorum ad 
Podostemaceas ( Tristicha trifaria Tul.) in riv. d'e Cahondo : Feb. 1857 
No. 108. 
xxili. <YsT<x;nxi;.i:. 
1. DERMOCARPA Crouan (1858). 
I. D. depressa W. .t (i. S. West in Journ. Hut. 1897, p. •"><»! 
Loanda. — Epiphytiea supra PitJiophoram radiant* m in aquariia aqn i 
subdulcis insula) Cassanga pr. IMorro da Cruz ; April 1854. No. 197 
xxiv. chrocm <mva('i:.i-;. 
1. GKEOTHECE Nag. (1849). 
I. G. confluens Nag. Gatt. einz. Alg. :^.i. i. <;, t'. I (1849 
W. el G. S. West. l.c. 
GOLGNGO Alto. — Cum Chroococco schizodermatico var. badio-jmr- 
pureo, ad rupes juxta riv. Coango ; June 1856. No. 139. 
2. MERISMOPEDIA Meyen (1839). 
1. M. glauca Nag., I.e., 55, t, i. d. f. 1 (1849); VV. el G. S. 
West. l.c. 
Goniwrn glaucu/m Ehrenb. 
Hi ii. i. \. — Inter Utriculariam, Morro de Lopollo : April 186(1 
No. 179. 
2. M. hyalinaKut/. Phyc. Germ. 1 12 ( 1845); Tab. Phyc. v. II'. 
i. 38, f. i. lis;.:,); w. e1 G. S. West, l.c. 
Hi ii. i. a. [n paludibus exsiccandis ; April I860. X". 176 
:i. TETRAPEDIA Reinsch (1867). 
I. T. aversa W. et <:. 8. Wesl in Journ. Bot. 1897, p. .nil. 
Pungo Andongo. In stagnis prope Anbilla (Condo) March 1857 
No. 177. 
1. GLOZOCAPSA Km/. (1843); em. Nag. (18 
1. G. gelatinosa Kiitz. Phyc. Gener. 171 (1843); Tab. Phyc. i. 
(1845 9), I") 16, t. 20, F. vi. 6 ; Rabenh. Flor. Europ. Alg. it 39; 
W. el G. s. West, l.c. 
