INSTRUCTIONS IN LEPIDOPTERA. 
23 
How to pin Lepidoptera. 
In the first place the collector must supply himself with 
solid-headed pins, which he may obtain of W. Gale, Crown 
Court, Cheapside, London ; they are sold in half ounce boxes, 
and Entomologists in the country can have them forwarded 
by post. 
The proper sizes to order are No. 6 for Sphinges and Bombyces. 
” »> a No. 8 for Noctuae. 
” »» tt No. 8 and No. 10 for Geometrae. 
” » a Nos. 19 and 20 for Micro-Lepidoptera. 
The pin must be inserted in the centre of the thorax, and 
held as nearly as possible vertical, if anything with the point 
lather inclining backwards; many collectors hold them with 
* le point inclining forwards, which gives the insect, when set, 
rather a s % appearance: the pin should be pushed well 
thiough the insect, so as to take firm hold of the cork, about 
one-third of an inch at least, projecting beneath the thorax of 
the insect. 
How to set Lepidoptera . 
The variety of apparatus that has been invented for this 
purpose would be rather puzzling to a beginner. Grooved 
an 1 ° un( led corks are used by many for setting the Noctuce 
j. reorf ietrid(e upon, and those who have seen such con- 
dances can imitate them, but to explain them accurately 
s * esciiption would be difficult. For those who have not 
UC cont i’ivances we therefore recommend a sheet of pre- 
g0 6 001 k* which should be glued on to a flat piece of wood, 
as t 0 \ t steady and prevent it from warping; then 
tbreeT 6 mCeS . car( i‘board of various lengths, from 
PointVf Urtlli ° f an Incl1 t0 two incIies > tapering nearly to a 
inch b 0I1 i e e * lt ^ tllG 0t ^ Gr enC * ^ ein ° a ^ out one-fourth of an 
roa d, insert on the brace at this broad end a good 
