22 
germinating, the size of the spores increases, as the result of which 
the outer membrane bursts. The outer membrane consists of two 
pieces with pointed ends, one being much larger than the other, and 
covering it like the lid of a box. Afterwards, through the expansion 
of the inner membrane, the smaller piece of the outer membrane gives 
from the resting-spores. 
n Conferra bombycina, var. minor, either single cells swell up 
into a barrel shape or here and there the contiguous ends of two 
neighbouring cells assume a club-like form. It is here that the largest 
part of - chlorophyllaceous protoplasm accumulates, and after this 
but the writer considers it probable that zoospores are first formed 
the swollen end is separate y a transverse wall from the longer 
membrane of the mother-cell ; (3) by separation of a portion of the 
cell substance to a swollen part of the mother-cell, and the thickening 
of the membrane of this portion.— Cooke, l.c. 
tof. Moebius has placed a query against this species, and 
says:—“A certain determination of material preserved in aleohol 
cannot be made, for the contents of the cells are no longer 
maintained in their normal state, and the colour of the filaments, which 
likewise is of value as a characteristic feature, is no longer present. 
the world. It has not yet, however, been assigned to Australia.’ 
Fig. 16 : Portions of thread x 400.—Cooke, l.c. 
Hab.: Fairfield, Thos. L. Baneroft, Also in New Zealand and Europe. 
. 
Order II. SIPHONEA, Grey. em. 
Famiry V. VAUCHERIACER (Gray), Dumort. 
: g@ monecious (rarely dicecious), cwspitose, unicellular 
bicellular. Thallus with terminal vegetation, utricle-shaped, elongated, 
i s 
thallus, cut off by a septum, contents dark-green, at length enclosing 
one large zoospore, densely clad with vibratile cilia. Oogonium la eral, 
sessile, or borne on a more or less elongated simple or partite peal’ 
cytioplasm at length converted into a large oospore. Antheridiam 3 
ry 
