150 THE ENTOMOLOGIST’S WEEKLY INTELLIGENCER. 
Another Cosmopteryx F — Herr Ernst 
Hofmann lias lately found a mining larva 
in the leaves of Orobus niger. The 
leaves are much inflated, and assume an 
appearance totally different from that 
caused by the larvae of C. Schmidiella in 
the leaves of Vicia Sepium : whether it 
is truly a Cosmopteryx or should be re- 
ferred to some other genus remains yet 
to be ascertained. — Ibid. 
Gall Insects . — 1 have this year devoted 
some time to the study of the gall in- 
sects, and have occasionally sent notices 
thereof to the pages of your interesting 
serial, in the hope of drawing attention 
to these vegetable galls. Many excres- 
cences are the work of Dipterous insects, 
such as the Cecidomyias, whose wens 
may be noticed on the ground-ivy, wild 
thyme and speedwell, in some instances 
giving grace to the plants, in others de- 
formity ! Another race of flies (T’cp/m’- 
tidce) seems partial to the seed-beads of 
our Composite flowers, affecting the 
thistles, knapweed and ragwort. To one 
of these {Urophora solstitialis F) I would 
direct attention. In May last I gathered 
some seed-heads of the knapweed {Cen- 
taurea 7iigra), and found therein a cluster 
of oblong galls tenanted by yellowish 
pupae, with dark dots at the posterior ex- 
tremity. I gathered a handful of these 
galled heads, and put them into a chip- 
box, duly labelled. Here they remained 
till the end of July, when I returned 
from a tour in South Wales. My chip- 
box was opened, and revealed some very 
beautiful gall-flies, with barred-dappled 
wings, gay as many of the Tineas ! The 
Tephritidic have beautifully banded hy- 
aline wings. “ Sometimes,” says Mac- 
quart, “ the bands are isolated, sometimes 
associated in pairs. In one species the 
surface is marked by a profusion of white 
spots ; in another the rays proceed from 
a common centre in the form of a star. 
In a word, such is the diversity in the 
markings of this tribe that the several 
species that compose it arc best charac- 
terized by the dappling of their wiugs.” 
— Peter Ixchbald, Storthes Hall, near 
Huddersfield ; August 3. 
EXCHANGE. 
Erebia Blandina. — I have at present 
a good number of this insect, and shall 
be very glad to exchange with any one 
who will send me a list of duplicate.*!. 
— R. Thomson, Vieichill, Cawdor, Naim, 
N.B. 
Exchange. — I have some very fine 
specimens of Melitaa Artemis, Salyrus 
Scmele, Arge Galathea and Acontia Luc- 
tuosa, which I should be glad to ex- 
change. Among my principal wants are 
the following, as numbered in the Ap- 
pendix to Stainton’s ‘ Manual’: — Nos. 4, 
5, 20, 23, 24, 28, 4 1 , 42, 43, 48, 52, 53, 
59, 02, 03, 70, 80 to 80, 88 to 102 (ex- 
cept Trochilium Tipuliforme), 181, 182. 
— T. E. Richardson, 2, Victoria Villas, 
Weston-super-Mare ; August 3. 
Exchange. — Having a considerable 
number of Sphecia Bcmbeciformis in 
line condition, to spare, I should like to 
exchange with any one willing to do so. 
My wants are loo numerous to specify. 
Applicants must write first, and state 
what they have to sjmre. — Henry 
Stephenson, 95, Charley Street, Bolton ; 
August 3. 
Exchange. — We have some fine speci- 
mens of T. Derasa, T. Batis and E. Ful- 
vago for exchange. Please write first. — 
William Lund and William Bennett^ 
Elm Street, Wakefield ; .Avgust 0. 
Exchange . — I have taken a few more 
Zeuzera AEsculi, and have some to ex- 
change for any of my desiderata, as 
numbered in the Apjiendix to the ‘ Ma- 
nual,’ viz. ; — Nos. 24, 52, 53, 59, <53, 81, 
90,92, 9(5,100,109,115,117,121,122,131, 
143, 144, 150 to 162, 165 to 157, 1(51, 
175, 183, 187, 19G to 198, 201, 202, 210, 
