Miscellaneous. 
239 
hermaphrodite arrangement of the organs, noticed the difference 
between spores and gemmse, and concluded by stating the following 
arguments in favour of the sexual nature of the spore-formation in the 
whole muscal alliance : — 1. The existence of antheridia and pistil- 
lidia, and the production of true spores by the latter. 2. The exist- 
ence of phytozoa in the antheridia. 3. The relation of antheridia 
and pistillidia to one another in point of periodicity, both as regards 
development and function. 4. I'heir relative arrangement, either 
together or separate, on the same or on different individuals. 5. The 
provisions by which the coming in contact of the contents of the 
antheridia with those of the pistillidia may be effected. 
2. “ On the Ovule of Euphrasia officinalis,” by George Dickie, 
M.D., Lecturer on Botany, King’s College, Aberdeen. 
The paper was illustrated by drawings, and will appear in the 
‘ Annals of Natural History ’ and in the Society’s ‘ Transactions.’ 
3. Dr. Fleming exhibited a specimen of the stem of D'Urvillea 
utilis (Bory) from Acapulco, and made some remarks on the pecu- 
liarity of its structure, more particularly as regards its transverse 
partitions and large air-cells. 
4. Dr. Dickie communicated the discovery of a new Diatomaceous 
plant, allied to Meloseira, in the neighbourhood of Aberdeen. It is 
the Orthoseira of Thwaites, and will be published under the name of 
O. Dickiei (see p. 168 of the present number). Dr. Dickie also 
announced from Mr. Thwaites the discovery of a new species of 
Dickieia, consisting of binate frustules at the end of mucous ap- 
pendages, like the Omacoccus of Hassall. 
Dr. Bell Salter communicated the discovery of Zostera nana, in 
large quantities, on the shores of the Isle of Wight near Ryde. 
Mr. Babiiigton sent notices of the following plants having been 
added to the British Flora since the publication of the second edition 
of his ‘ Manual,’ specimens of all of which are in his possession, viz. : 
— Thalictrum minus ft. glandulosum, Koch ; Ranunculus Petiveri a. 
Mairii, Godr., ft. CandolUi, Godr.; Saghia ciliata, Fries; Campanula 
rotundifolia /3. lancifolia, Koch ; Simethis bicolor, Kunth ; and Carex 
brizoides, Linn. 
Dr. Balfour exhibited specimens of Ceramium acanthonotum, from 
the shores of the Frith of Forth. 
MISCELLANEOUS. 
BRITISH MOILUSCA. 
The Truncal ella atomus of Philippi (Moll. Sic. ii. j). 134. t. 24. f. 5) 
is found in the following localities mixed with the l/el/x nitidissima 
of Adams (Linn. Trans, v. p. 4. t. 1. f. 22, 23, 24); Swansea and 
adjacent bays ; Tenby (the locality given by Adams) ; Weymouth ; 
Scarborough; Falmouth; Cork Harbour; Bantry Bay; Belfast (Wil- 
liam Thompson, Esq.), and Skye (George Barlee, Esq.). It appears 
to be the Helix bicolor of Adams (L, 'P. v. p. 4. t. 1. f. 25, 26, 27), 
and referable to the genus Skenea of Fleming. Philippi has omitted 
in his figures of the shell to indicate its size, which may have misled 
