51 
Class ITI. PHY COCHROMOPHYCEZ:, Rabh. 
Sup-chass HETEROCYSTES. 
Order V. HORMOGONEA, Thur. 
Famity IX. SIROSIPHONIACESA, Rabh. 
Moebius, in his paper on the Queensland Alge does the same, 
have thought it advisable to follow the latter, and record them in the 
present Bulletin. 
HAPALOSIPHON, Negeli. 
Trichomes formed mostly of a single row of cells, sheath slender, 
ogg ct looking like olypothri«—Cooke’s British Freshwater 
Age; . 
H. pumilus, (Kvetz.) Kirchn. Prof. Moebius’ note is as follows: — 
Thallus in minute flaky or turfy masses amongs other alge. 
STIGONEMA, Ag. 
Cells of the trichome often geminate or ternate in consequence 
ew lateral multiplication, or even forming transverse, several- 
8 . 
S }“Y prominent in the old filaments ; hormogones originating 1n ate: 
| janchlets oe of a single row of cells —Cooke’s British Fresh- 
4 Ros 
& hormoides (Kuet B Prof. Moebius 
—— ODser etz. orn, et Flah. rot. bius 
( Serves — Found ASceinetl in the slime of the Coleochete Baileyi 
and Flah. (ibid., 
flon? tat the alga occurs abundantly in the slimy mass?s of other 
#®; in this situation it lives in the water, besides which it is to be 
