PnuiLPorr.—Notes and Descriptions of N.Z. Lepidoptera. 669. 
prominent spots on costa, termen, and dorsum: fringes reddish-ochreous. 
Hindwings fuscous-violet : fringes fuscous, mixed with ochreous round apex. 
The species may be separated from both chrysargyra and aemula by the 
dark apical strigae and the general darker colouring; the genitalia of the 
male show sufficiently definite differentiating characters. 
Dun Mountain, Nelson. Five e specimens taken in November and 
December in forest at elevations of from 1,000ft. to 2,500 ft. Holo- 
type (d), allotype (9), and three paratypes in coll. Cawthron Institute. 
A Method of Injecting the Tracheae of Insects. 
By Н. B. Kırk, M.A., F.N.Z.Inst., Professor of Biology, Victoria 
University College, Wellington. 
[Read before the Wellington gv vay Society, 24th December, 1923; received by 
Editor, 31st December, 1 issued separately, 28th August, 1924.] 
THE following method.of injecting the tracheae of insects is so simple and 
obvious that I find it hard to suppose that it is new. I cannot, however, 
nd any mention of it, nor can I find any one that is acquainted with it. 
Prepare metagelatine in the usual way, by adding ammonia to a gelatine 
solution and keeping the solution melted for some hours until, on coo 
it does not set. Add a solution of carmine, and pass the mixture through 
a thin filter-paper. Place the mixture in a small beaker or other vessel, 
into the не в гр Тһе дн арб of the pop tock | is that the 
pressure is not one all at once, and thus the mixture has time to reac 
the finer trachea 
Remove the ed, and at once make a slit in the body-wall to permit 
the access of liquid to the peri-visceral spaces. Place the insect in acid 
—— of 70 or 75 per cent. in order to set the peann and precipitate the 
on may be made in twenty-four hours e operation 
su 
filled, but the finer tracheolae as well. Unless much time has been lost 
ore immersion of the insect in acid alcohol, the colouring-matter will 
not have diffused through the tracheal walls. 
In the case of adult lepidopterous insects it may happen that one or 
more of the арсы become closed by loose scales, so preventing the inflow 
of the gelatine mix 
mong other сола of the method is the filling of the lungs ot 
air-breathing vertebrates in case it is desired to obtain a cast of the lung- 
cavity. 
