141 
Entomological Society. 
glandular bodies coexist ; the former I regard as the true salivary- 
organs, the latter as veneniferous glands for the destruction of prey. 
In Nepa, Notonecta, Nauco)'is and Ranatra these bodies are beauti- 
fully developed. 
In pulmonary Arachnida the veneniferous glands are situated in 
the cephalothorax ; their excretory ducts arise from the anterior part 
of the gland and traverse a minute canal in the mandibles, and open 
at the perforated extremity of these organs. 
In Myriapoda, as in the preparation of Geophilus longicornis now 
before us, the veneniferous glands lie at the base of the mandibles 
among the striped or voluntary muscles that occupy this region. With 
an inch glass we see these organs most satisfactorily ; they consist of 
two oblong compact bodies composed of bundles of diaphanous cells 
closely pressed together and inclosed in a distinct capsule reposing 
loosely at the base of the jaws and occupying the hollow part of 
these organs ; from the anterior part of the gland rises a single ex- 
cretory duct, which passes forwards in an arched direction and enters 
a canal in the horny part of the perforated jaw and opens near its 
apex, as in the Arachnida. By this mechanism, when Geophilus in- 
serts its mandibles into the body of its victim, it at the same moment 
introduces a poison into the wound which destroys life, after the 
same principle as the parotid glands in some ophidian reptiles, as 
Crotalus, Naja and Vipera, are metamorphosed into veneniferous 
glands for the destruction of living prey. After this communication 
was made. Dr. Wright demonstrated the preparation to the members 
of the Club, and exhibited the singular structure with the aid of the 
microscope. 
ENTOMOLOGICAL SOCIETY. 
January 5th, 1846. — The Rev. F. W. Hope, F.R.S., President, in 
the Chair. 
Mr. Edward Doubleday exhibited a large web, of a delicate silken 
texture and four or five yards long, sent from Mexico, and intended 
for the collection of the Briti.‘?h Museum, known by the name of the 
Tela de Maiz, spun by the caterpillars of some small Ypommeuta or 
Anacampsis over heaps of maize laid up in store. 
The President exhibited a portion of Mr. Fortnum’s collection of 
insects formed at Adelaide in South Australia, with drawings of some 
of the more remarkable kinds, and announced that it was intended 
that a share of the duplicates should be placed in the collection of 
the Entomological Society. 
Mr. Bedell (who was present as a visitor) exhibited a specimen 
of Argyromiges Roborella of Zeller, a species new to Great Britain. 
A note was read by Mr. Brayley, accompanied by a species of 
Anthomyia {A. pluvialis, Linn. .^), observed by a druggist to settle 
in great numbers on the filter when he was preparing tincture of 
cantharides, and at no other time. They did not however come out 
of the cantharides. 
Extracts were read from letters addressed by Mr. Benson to Mr. 
