THE ENTOMOLOGIST’S WEEKLY INTELLIGENCER. 
7 
open, and extracted a number of pup© 
about half an inch long, in thin reddish 
cases. Each pupa was in a separate 
hole, about two inches long: at the 
furthest extremity were the remains of 
several specimens of Musca vomitoria, 
Sarcophaga camaria, with wings of several 
other Diptera, I think Syrphid© ; some 
of the flies had not been touched ; of the 
rest all was gone except the wings. 
Close to the pupa, at the opeu extremity, 
was a plug of wood-gnawings completely 
filling the aperture. The pup© have not 
yet come out ; perhaps they will not until 
next year. — R. TYRER,jun., Hill House , 
Eye ; Sept. 17. 
Miles. — This is my first year as an 
entomologist, having been a collector 
of botanical specimens for some years. 
Shortly after reading the article on 
“ Mites ” in the ‘ Intelligencer ’ of August 
6th, I was looking over the specimens in 
my cabinet, not suspecting any enemies 
being present, when I found a pile of 
dust ; I subjected it to the microscope, 
and there, to my chagrin, I saw the living 
mite. I immediately applied the mixture 
recommended, and camphor ivas in the 
drawers. Now, I thought, I am safe ; 
but not so, for I regret to say I have 
found more suspicious dust since. Last 
Saturday I subjected some more of this 
to_ the microscope; and, finding a fine 
specimen, I took a drawing of it : it is 
furnished with six articulated legs, having 
long curved hairs ; its legs are constantly 
in motion, passing on its food towards its 
hedgehog- shaped mouth. I have a per- 
fect horror of feeding these gentry, and 
neither the camphor nor the mixture of 
the oil of anise, & c., seems sufficient 
to. exterminate them. The article on 
“Mites” says, “Now, if care be not 
taken, mites will be conveyed by us from 
the setting-board to the store-box.” I 
have no doubt this is my case ; but can 
you tell me what sort of care on my part 
will prevent this? If you can give me 
any advice on this subject I should feel 
very much obliged to you. — Thomas W. 
Warms, Louth , Lincolnshire ; Sept. 19. 
EXCHANGE. 
• 
Exchange. — I have duplicates of 
G. C-atbum, H. Velleda and Nos. 2, 18, 
27, 91, 107, 380, 402, 462, 613, 614 and 
623, which I shall be glad to exchange 
for Nos. 1, 3 ?, 4, 5, 11, 12, 19 to 24, 
29, 32 to 44, 55, 57 to 59, 62, 63, 66, 68, 
70, 71, 75, 85, 86, 88 to 90, 94, 95, 100, 
109 to 128,130 to 134,136, 138, 140,146, 
163, 164, 166, 172, 178, 182, 186, 191, 
>94, 195, 200, 206 to 211, 213, 218, 219, 
223, 236, 237, 245, 252, 254, 256, 271, 
273, 274, 276, 279, 280, 288, 296, 305, 
306, 309, 316, 317, 323 to 327, 329, 330, 
335, 340, 341, 352, 368,379, 385,392, 
393, 397, 399, 404, 420, 427, 439, 466, 
470, 473, 478, 488, 491, and almost any 
local Geometr© or Pyralid©. Applicants 
will oblige by sending their own boxes, 
and will please to write first, stating what 
they have to give, and all not receiving 
an answer within ten days will please to 
infer that their offer is declined. — M. 
Hill, Little Eaton, near Derby ; Sept. 15. 
Exchange. — I have pup© of Sphinx 
Ligustri and of Smerinthus Ocellalus and 
Tilice, which I should like to exchange 
for a pair of any of the following, as 
numbered in the Appendix to the ‘Ma- 
nual 3, 11, 15, 32—34, 42, 45, 53, 86 
—89, 118, 121, 136, 163, 164, 167, 168, 
177, 181, 205, 492, 493, or I have some 
fine specimens of Catocala Nupta in 
duplicate. Persons wishing to exchange 
will be kind enough to write first. — 
G. Keen, 1, Manor Place, Walworth 
Road; Sept. 20. 
Locusts for Exchange. — Ten specimens 
of the migratory locust (Gryllus migra- 
torius) have been taken in this neighbour- 
hood during the last few weeks. I shall 
be glad to exchange single specimens 
for a pair of M. Cinxia, M. Alhulia, 
