ARCHERINA BOLTONI. 
61 
Archerina Boltoni, nov. gen. et sp., a Chloro- 
phyllogenous Protozoon, allied to Vampy- 
rella, Cienk. 
By 
E. Ray Lankester, M.A., F.R.S., 
Jodrell Professor of Zoology in University College, London. 
With Plate VII. 
During the months of June and July, 1884, 1 received from 
Mr. Thomas Bolton, of Birmingham, several gatherings from 
ponds in his neighbourhood which contained an abundance of 
a minute, green-coloured, Heliozoon-like organism, to which 
he directed my attention. Careful study of the material for- 
warded to me by Mr. Bolton established the fact that the 
little Protozoon was hitherto undescribed, and that it presented 
many features of considerable interest. 
The discovery of this form is due to Mr. Bolton, to whom 
English naturalists are deeply indebted for constant supplies 
of the most interesting and important of our known freshwater 
micro-fauna, as well as for the discovery of such novelties as 
the Bhizopod, Lithamoeba discus, the Chsetopod, Haplo- 
branchus cestuarinus, several new Naidinse, and not a few 
Rotifera. 
I propose to place the organism thus brought to light in a 
new genus, which I dedicate to my friend and former colleague, 
Mr. William Archer, of Dublin (the discoverer of so many 
Heliozoa), as “ Archerina and as a specific name I asso- 
ciate with this interesting form that of its discoverer. It will 
thus stand as Archerina Boltoni. 
