PROCEEDINGS OF SOCIETIES. 169 
tification, seem to forbid its being placed near the plant men- 
tioned. 
Dr. Moore showed scales taken by him from the frond of 
Nothoclena sinuata, which formed very pretty objects for the 
polariscope. He found that these scales presented very different 
forms according as they were taken from the upper or under side 
of the frond. In the one instance they were much branched and 
divided in a dendroid manner, or somewhat, as it were, like one or 
two staghorns issuing from a common base; in the other they were 
oval and brought to a point, the margins undulate or notched. 
Mr. Vickers exhibited various diatomacean slides, also some of 
diatomacean deposit from Moran, in Seville, obtained through Mr. 
Stokes. 
16th February, 1865. 
Read the minutes of the preceding meeting, which were signed. 
Mr. Dixon showed Coscinodiscus, sp., Dictyocha, sp., and sponge- 
spicules, from Spain. 
Dr. E. Perceval Wright exhibited a minute species of annelid 
from the coast of Donegal, which he thought was as yet unde- 
scribed. It belonged to the Polycheeta, and to the section Seden- 
taria, and was nearly allied to Siphonostomum (Otto). The length 
of the animal was about half an inch. 
The Rev. Eugene O’Meara called attention to the fact that it 
had been frequently stated at the meetings that diatomacean 
forms would in all likelihood be found in coprolites. Having re- 
cently procured some powdered coprolite, through the kindness 
of a friend, he had submitted it to a careful examination, in hope 
of realising the anticipations that had been entertained. This 
pulverized coprolite had been, he was informed, ground in a mill, 
and was afterwards treated with acid. The result of this investi- 
gation was that no diatomacean remains—no trace of organization 
of any kind—was discovered. More satisfactory were the results 
of an examination of a piece of rock from Malta, procured by Cap- 
tain Hutton. In this stone three diatomacean frustules were 
found—two Pinnulariz of the same species, the other form, a Na- 
vicula, so like NV. elliptica as to leave on his mind little doubt of 
identity. Mr. O’Meara likewise brought under the notice of the 
meeting three species of Grammatophora found on seaweeds from 
the Friendly Islands. 
Mr. Vickers showed Triceratium areolatum obtained from Bar- 
badoes earth furnished by Mr. Stokes. 
Dr. Frazer showed cavities in silica containing fluid. 
Mr. Archer showed a slide of Desmidiacee obtained from Mr. 
A. Leipner, of Bristol, collected near Dresden, and he brought it 
forward chiefly to show the identity of the forms thereon with 
those found in our own mountains, and all rather common species. 
These were Micrasterias denticulata (though marked on the 
accompanying label M. rotata, thus showing the widespread 
confusion which seems to exist as regards these two, indeed, very 
