THE ENTOMOLOGIST’S WEEKLY INTELLIGENCER. 
103 
inner surface a longitudinal groove 
provided with sharp teeth on the sides, 
which receives the fang when in a state 
of repose. The fang is very hard, curved, 
acute, and has a small fissure near the 
point, which emits a colourless fluid 
secreted by a gland. These instruments 
are either glabrous, or covered more or 
less with hairs, and are sometimes armed 
with sharp corneous points, "particularly 
at the extremity, near the insertion of 
the fang. 
“ Spiders belonging to the family My- 
galidtB have the falces articulated hori- 
zontally ,ftheir movement being vertical, 
the falces of those included in the other 
families being articulated vertically, or 
on an inclined plane, and" their principal 
movement lateral, with the exception of 
a few species whose falces are united. 
“The maxillae and the sternal lip are 
directed forwards or inclined downwards 
in all spiders. The former are hairy at 
the extremity, which is round, obliquely 
truncated or pointed. Their configura- 
tion and^their'position in relation to the 
sternal lip, together with the form of the 
latter, furnish excellent generic cha- 
racters. 
“ In much the greater number of 
spiders? the abdomen, attached to the 
cephalo-thorax by a short pedicle, is 
enveloped in a soft, continuous skin, 
covered more or less with hairs; but in 
some ^species its covering is of a hard 
corneous consistency. 
“The predominant" forms of the abdo- 
men are ovate, cylindrical and sub- 
globose, variously modified ; and its 
figure is still further diversified in some 
species by fleshy tubercles and corneous 
spines. On its upper part or back it 
frequently exhibits divers colours, ar- 
ranged according to numerous designs, 
which greatly contribute to the distinc- 
tion of species.” 
(To be continued.) 
Lectures at Swansea. — A series of 
highly interesting and instructive lectures 
have just beeu delivered at the Royal 
Institution. On Monday week Mr. David 
Williams, F.L.S., one of the curators of 
the Institution, read his second paper on 
Entomology, the subject being “ Insects 
injurious to Man,” forming a companion 
paper to one read on the preceding Mon- 
day, the subject of which was “ Insects 
beneficial to Man.” The chair was occu- 
pied by Dr. Nicol ; and the theatre of the 
Institution, in which the lecture was de- 
livered, was crowded. The subject was 
made very interesting, and gave general 
satisfaction, the lecturer confining him- 
self to those insects which are injurious 
to man. At the close of his lecture Mr. 
Williams suggested the formation of an 
“ Early-Rising Society ” for Swansea, to 
be composed of young men who might 
feel disposed to band together for the 
mutual study of Natural History. Swan- 
sea, he said, was far behind other towns 
in this respect; and he threw it out as a 
suggestion, whether the formation of a 
Naturalists’ Club would not conduce to 
the intellectual improvement of those 
who might feel disposed to join it. Dr. 
Nicol moved a vote of thanks to Mr. 
Williams for the highly interesting enter- 
tainment which he had afforded. Mr. 
Moggridge seconded the resolution, which 
was carried by acclamation. Mr. Mog- 
gridge stated that, with regard to the 
formation of a Naturalists’ Club for 
Swansea, if such were done, he would 
become a member, and would do all he 
could to assist the undertaking : it might, 
he said, he made the means of acquiring 
a vast amount of knowledge, and, by 
leading young men to study Natural 
History in the fields, he the medium for 
much pleasant and healthful recreation. 
Mr. John Jenkins, F.R.A.S., of Rother- 
slade, endorsed the suggestion as to the 
desirability of forming a Club for the 
study of Natural History: he also stated 
that the papers which Mr. Williams had 
read on Entomology reflected credit upon 
the compiler, and testified to his talent 
and care in research. The audience ac- 
cepted the suggestion with a round of 
