PROCEEDINGS OF SOCIETIES, 191 
into the Amceba, but were really linear prolongations of the sar- 
code itself. It was only under a higher power, say a quarter-inch, 
that the slight central constriction of these linear appendages 
could be seen. At this point one seemed prone to bend, and the 
animal seemed to have the power again to erect it somewhat 
quickly. Sometimes these prolongations were somewhat more 
scattered, but were always very close, mostly, indeed, as has been 
said, issuing ina tuft. This tuft, as has been also said, in by far 
the greatest number of cases occurred close beside the villous 
patch, but sometimes a few of these linear appendages seemed. to 
take origin from the villous patch. Dr. Wallich, in his papers on 
this form (‘Ann. Nat. Hist.,’ 3rd ser., vol. xi, plate viii, fig. 2), 
draws attention to the villous patch displaying a number of short, 
narrow extensions, seemingly emarginate at the ends; these seem 
to be enlarged and prolonged villi, as it were, and do not appear 
the same thing as the very long appendages here drawn attention 
to, as the latter are very greatly longer, more rigid, and mostly 
coexist alongside the villous region, the latter exhibiting its 
ordinary appearance and condition. This observation, quantum 
valeat, seems possibly to point to a still greater differentiation of 
parts than has yet been observed in this remarkable form ; and be 
the significance of these unusual appendages what it may, Mr. 
Archer thought the observation would not, perhaps, be without a 
certain amount of interest. 
Mr. Archer presented, on the part of the author, Mr. C. P. 
Roper, his ‘ Catalogue of Works on the Microscope,’ for which 
gift the thanks of the Club were voted. 
Captain Crozier, R.E., at present residing at Gosport, was 
elected a corresponding member of the Club. 
March 15th, 1866. 
The Rey. E. O’Meara, A.M., exhibited Zerpsinoe musica and 
Pleurodesmium Brébisonii, both from slides supplied by Captain 
Crozier, corresponding member of the Club. 
Mr. Archer showed two cells of Zygnema presenting examples 
of the organism named Monas parasitica, by Cienkowski, and exhi- 
bited the figure given by that observer in Pringsheim’s ‘ Jahrbiicher 
fiir wissensch. Botanik,’ Band i, t. xxiv, figs. i, ii, ili, iv, m, 
with which the present specimens seemed quite to agree. It 
seems, however, that the organisms referred to may, indeed, more 
likely be some stage of a plant allied to Chytridium near Sapro- 
legniez, let opinions differ as they may as to the algal or fungal 
nature of that singular group. 
Mr, Archer exhibited specimens of Spirotenia parvula (ejus) 
(described by him, ‘ Proc. Nat. Hist. Soc. Dub.,’ vol. iii, p, 84, pl. 
ii. figs. 832—43, and ‘ Quart. Journ. Mic. Soc.,’ n. s., Vol. I, p. 258, 
pl. xii, figs. 32—48), presenting the peculiarity of being suspended 
