A424, SIR RAY LANKESTER. 
by Chodat (compare especially fig. 2 of his P]. III). Not only 
are the radiating processes and the form of the chlorophyll 
bodies identical in the two sets of figures, but Chodat also 
figures and describes the empty, discarded spherical cases 
with radiating processes, which I described under the name 
of “ vhosts,” and figured in fig. 18 of my PI. 7. 
In examining this organism in 1884 I was particularly 
struck by the frequent association with it of colourless, naked 
amoeboid protoplasm, which I was led—I now think errone- 
ously—to consider as an essential part of the organism itself. 
I now believe that this ameeboid protoplasm belonged to a 
Vampyrella-like organism which associated itself with the 
Archerina, and frequently invested it so closely as to lead to 
the supposition that it was part of the Archerina itself. I 
have since come across several cases of this close investment 
of a minute algoid organism by the naked protoplasm of an 
amoeba-like or Vampyrella-like companion. <A case which I 
may mention is that of the hollow botryoidal fronds of the 
interesting Clathrocystis eruginosa of Henfrey, which 
I have had very ample opportunity of studying. 
I have no doubt that it is due to the fact that I was led, 
by the association of extraneous amoeboid protoplasm with 
many specimens of Archerina, to refer this organism to the 
Protozoa, that my description of it has escaped the notice of 
Professor Chodat and other botanists. Nevertheless, I think 
that the genus Golenkinia and the species G. radiata must 
give way to the genus Archerina and the species A. boltoni 
of nine years’ earlier publication. 
The name Phythelios given by Frenzel in 1891 to what is 
probably the same organism is also later than Archerina. 
Whether there is anything like a constant or very frequent 
association of Archerina with a minute amceboid commensal 
remains an open question. 
Subsequently to Chodat’s deecttion of Archerina as 
Golenkinia another botanist, Lemmermann, described (in 
‘Hedwigia, Bd. xxxvii, 1898, p. 303) under the name 
“Richteriella botryoides,’ some of the phases of divi- 
