10 [June. 
The change to the pupa state, in summer, takes place between the 
leaves of its abode. But, in the autumn, all the larvae quit the food- 
plant, and assume the pupa state on the ground, where they are not 
unfrequently under vrater for months together without injury. 
The pupa reposes in a fusiform, rather thick, snow-white cocoon, 
which is about twice as long as its body. It is ochreous-yellow, without 
peculiarity ; the short cone in which the abdomen terminates, bears at 
its end four short bristly spines, with hooked tips, and several on each 
side. When the imago is ready to appear, the pupa forces itself, by 
the aid of the lateral spines on the abdomen, far out of the leaves, so 
that it is often only left hanging by the last segment. In summer, the 
imago appears 10 or 14 days after the pupa state has been assumed. 
The hybernatiug pupa only require to be placed in a moderately warm 
room, and the perfect insects are excluded before the end of the winter. 
In many years the larva is so plentiful, that, on large bushes of 
JEtiphorhla, almost every shoot is tenanted by one. The perfect insect, 
however, is very seldom met with at large. Of the summer brood, I do 
not remember to have ever met with a single specimen ; at the end of 
May I once, on a moist warm evening, saw a few of the moths flying 
round the food-plant much in the style of Dichrorampha Petiverella. 
In captivity, they emerge from the pupa at almost all hours of the day, 
and then sit quietly on the leaves. They there often become the prey 
of a species of grey spider, which had settled in the deserted larval 
abodes, and then been placed in the breeding cage along with the 
clusters of leaves. 
Hitherto this species has only been observed in the bed of the 
Oder, where the JEu2)horhia grows freely, exposed to the flooding of the 
valley. 
March, 1867. 
PUPATION OP ANTISPILA PFEIFFEBELLA. 
BY CHAS. HEALT. 
To my mind it does appear remarkably strange that the two 
larvae in this genus, which agree so much in their manner of feeding, 
&c., yet should difier so much in the mode in which they pass the 
winter months. 
A. TreitschJciella remaining in the larval state till the following 
month of May before it turns to pupa ; A. Pfeifferella, on the other 
hand, shortly after it has cut out its case, enters the pupa state. Then, 
again, A. TreitscJikiella, although it does not assume the pupal form 
