93 
PINE. 
Small Pine Sawfly. Lophyrus (7 sp.). 
On the 28th of June I was favoured by specimens of Sawfly cater¬ 
pillars, sent me from Happy Land Park, Bishop Auckland, Co. Durham, 
by Mr. J. Ilderton Leaton Blenkinsopp, with the observation, “ I send 
you a branch of a tree from a young plantation which is being devoured 
by caterpillars. They eat all the trees (Scotch Fir), excepting this 
year's shoot, which they leave.” The twigs or sprays of Scotch Fir 
sent were fairly loaded with the masses of Sawfly caterpillars 
hanging one on the other, and the bark as well as the leafage was 
being consumed. 
The caterpillars were 22-footed, and when they spun up formed a 
cocoon which was easily compressible with the nail, nearly three- 
eighths of an inch in length, of a yellowish colour outside, and lined 
within with two layers, separable with care from each other. The 
outer layer, next the cocoon, of a deep black grey colour; the inner 
layer, next the larva (which was still unchanged to the chrysalis state 
on January 25th), of a lighter grey. 
When the caterpillars were sent me at the end of June they were 
just near the time of spinning up, and the colour varied a good deal 
both in tint and depth of tint, and some of the caterpillars were darker 
in the stripes than others, so that I could not identify the species 
beyond the fact of their not being larvae of the common Pine Sawfly,* 
* The figure of the common Pine Sawfly is appended, although it is larger and 
the caterpillar differently marked to the kind found at Bishop Auckland, just to give 
an idea of the form of this kind of Sawfly, and of its many-footed caterpillar. 
Lophyrus pini. 
Pine Sawfly, caterpillar, and pupa, magnified ; and gnawed Pine leaves. 
