PROCEEDINGS OF SOCIETIES. 
Dustin Microscorican CuLus. 
20th October, 1870. 
Rev. Evans O’Meara exhibited Trinacria regina from Arran, 
a form hitherto found only in Jutland. This interesting addition 
to the Diatomaceous Flora of Ireland is in itself an extremely 
pretty object. 
Dr. Moore exhibited sections, made by Mr. Keit, of Loranthus 
ELuropeus. 
Mr. Archer presented living examples and drawings of the 
new rhizopod, a description of which appears in the present 
number of this Journal, and named Amphizonella vestita (Pl. VI, 
figs. 1—6). He showed Prof. Greeft’s figures of the type-form, A. 
violacea, contrasted and compared the present in its generic rela- 
tions, and endeavoured to explain the points illustrated in the 
sketches, into which it is, of course, here unnecessary to enter. 
Mr. Archer likewise exhibited drawings of two rhizopods re- 
ferred by him to the genus Plagiophrys (Clap. et Lachm.), and 
showed some preparations under re-agents in illustration of 
certain specialities evinced by each; these are, however, detailed 
in a paper in the present number of this Journal (see Pl. VII), 
and do not, therefore, require to be expatiated on here. 
Mr. Archer showed for the first time to the Club undoubted 
living examples of the rhizopod Acanthocystis spinifera (Greeff), 
presenting the presumable “central capsule,” the yellow globules, 
&c., in fact all the characteristics depicted by Greeff, and forming 
extremely pretty objects. In a paper published in this Journal 
(‘ Quart. Journ. Micr. Sci. vol. 1x, n. s., pp. 250, 386, and vol. x, 
n. s., pp. 17 and 101), Mr. Archer had mentioned that previous 
research had not hitherto disclosed the existence of this form in 
this country, and to a certain extent he had based some argu- 
ments on that fact, which, of course, so far as that bears, now fell 
away. The present examples showed not only the ordinary cha- 
racteristics, but several cases of ‘‘zygosis,” with a large opaque 
pearly-looking body in both “ conjugated,” and single specimens. 
These various points, with others, are likewise alluded to in a paper 
in the present number of this Journal, thus precluding the re- 
quirement of any more enlarged reference thereto in this place. 
Mr. Archer desired to record having seen the direct evolution 
and swimming away of the “monads” from the summits of the 
branches of the rather common organism which he had for some 
time known and thought of as the Aporea ambigua, Bailey. For 
some idea of this somewhat tree-like structure (believed to be 
