A. E. Lechmere 
176 
1. General appearance of the mycelium and dimensions of 
the hyphae. 
2. Size and shape of the normal sporocysts with diplanetic 
zoospores. 
3. Formation and germination of the gemmae. 
4. Formation of multiple sporocysts (chain gemmae). 
5. Occurrence of Adilya- type of branching of sporocysts. 
6. Occurrence of Aplanes- type of sporocyst. 
7. Occurrence of Dictyosporocysts. 
From the consideration of the points in common between these 
two species, it seems evident that they are identical. 
It now remains to establish the species which will include all 
the characters shown by these two investigations. 
Determination of the Species. 
In the case of the species in the previous paper, the exact 
species could not be determined, owing to the entire absence of the 
formation of sexual organs of reproduction, but from the frequent 
occurrence of the sporocyst it appeared to resemble S. torulosa. 1 
With the present species (Species I.), however, the case is quite 
different, as there is a plentiful formation of oocysts and antherocysts. 
From the characters in general shown in the life-history of this 
species, and from the dimensions and appearance of the oospores 
and oocysts, and the varied arrangements of the antherocyst, and 
especially the formation, although rare in this case, of the multiple 
sporocysts, the present species corresponds very closely to that of 
5. torulosa. 
The following full description of this species is given, taken 
from Rabenthorst—Kryptogamen Flora; Saproleguia torulosa, de 
Bary, 1881 (3); Synon. Saproleguia spec., Lindstedt, 1872 (13). 
Mycelium consists of a fringe of hyphae about 1 cm. composed 
of lax fairly thin branches (20/x thick). The hyphae are at first 
cylindrical and of equal thickness throughout their length, bearing 
terminal, club-shaped sporocysts (zoospores diplanetic). After 
discharge a new sporocyst grows up within the wall of the old one, 
Later on several sporocysts are formed, one behind the other 
(multiple sporocysts), which arise as swellings—“ Anschwellungen ”— 
on the filaments with dense contents and separated from one 
another by transverse walls and delimited externally by slight 
constrictions (see figs. 11—14, Vol. IX., PI. I.), so that when the 
1 See note after genus Leptomitus, N.P., Vol. IX., p. 308. 
