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Abstract

The monthly evening meeting of the Society, the last of the present
session, was held on Tuesday, the 12th Nov., J. Barnard, Esq., in the
chair.
Specimens from Mr. B. R. Dyer of curious shell-like cases made
by the larva of an insect.
In reference to these specimens Mr. Dyer writes:-"Mr. Swainson,
F.R.S., F.L.S., &c., &c., in his treatise on shells and shell-fish, gave a
description and drawing, and also erected a new genus (Thelidomus) for
the reception of what he supposed to be an entirely new and distinct
form of fresh water shell. His disappointment must have been great
when the observations of other scientists disclosed the fact that his
supposed discovery was not a shell, but simply the home of a small
freshwater insect, constructed with great skill out of small particles of
sand cemented together with some glutinous substance.
The Secretary read the original description of these "cases" from Swainson's Malacology; also, a notice of the genus Thelidomus, from
Sowerby's Conchological Manual. Several specimens were placed under
a microscope of low power, and examined by the members.
A letter from Dr. Milligan stating, inter alia, that he had forwarded
some books for the Society, was read. Among those specially mentioned
were Bewick's British Birds, 2 vols. ; Bewick's Quadrupeds, 1 vol. ;.
Crania Britannica (Dr. Davies), 1 vol., etc., etc.
A paper on the Land Shells of Tasmania, by Mr. W. F. Petterd, was read by Mr. Stephens, who prefaced the reading by stating that the
writer was (unfortunately) not a member of the Society.

Item Type:	Article
Authors/Creators:	Royal Society of Tasmania
Keywords:	Royal Society of Tasmania, Van Diemens Land, VDL, Hobart Town, natural sciences, proceedings, records
Journal or Publication Title:	Papers & Proceedings and Report of the Royal Society of Tasmania
Collections:	Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania
Additional Information:	In 1843 the Horticultural and Botanical Society of Van Diemen's Land was founded and became the Royal Society of Van Diemen's Land for Horticulture, Botany, and the Advancement of Science in 1844. In 1855 its name changed to Royal Society of Tasmania for Horticulture, Botany, and the Advancement of Science. In 1911 the name was shortened to Royal Society of Tasmania.
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