76 
THE entomologist’s RECORD. 
tainty say of any individual pupa which it is, but of a score of 
pupae said to be all one species, I should take a census of the 
numbers having 3 and 4 spines to the lateral anal armature, 
and if 3 predominated, I should say they were tridens, if 4, 
then they were psi. 
On one or two occasions I have fancied this larva missed 
the 5th moult, but being on occasions when the moults were 
not being carefully recorded, am in doubt, nor have I reared 
an autumnal specimen. 
The young larvae of Cuspidia have each their own method 
of eating and resting. Psi and tridens affect somewhat im? 
partially either side of the leaf, leaving the small ribs and the 
cuticle of the opposite surface, and when at rest are curled 
round in a circle. 
Notes' on Plate VIII. — The ova here delineated are those of 
the sections Ctispidia and Bisulcia, together with those of Moina 
orion, Demas coryli, and Diloba coeriileocephala, three species asso- 
ciated by many systematists with Acronyctas ; in my opinion 
correctly so in the case of M. orion^ doubtfully in that of D. 
cosruleocephala, and erroneously in that of D. coryli. I am 
very well satisfied with the success of the artist in these 
delineations. As pictures of the eggs they are everything that 
can be desired, and convey to the mind a most correct idea of 
the actual objects. As a matter of scientific accuracy they 
may be criticised on two points : — ist. The glassy transparency 
of psi, tridens and strigosa is of precisely the same character, 
and that of ligustri is nearly the same, and it is therefore 
unfortunate that, the drawings being made at different times, 
the method of representing this has involved different, instead 
of identical tints, in each instance. 2nd. In several cases the 
ribs are represented as all proceeding to the summit of the egg, 
instead of diminishing largely in number either by coalescing 
or by certain ribs stopping short as shown in the lateral view 
of M. orion (fig. 10 a). 
Fig. 3. — Leporina is most accurate in this respect, and is 
indeed a wonderfully successful representation of one of the 
most beautiful of these beautiful objects. The marginal clear 
zone is shown in all the Ctispidia eggs, and is widest of all, as 
shown in niegacephala, the largest but also the flattest of the 
group. The eggs of aceris and alni most resemble those of the 
Viminia group, aurico^na being, at its best colouring, not unlike 
them ; psi and tridens which in the larva state most approach 
Vinimia, both in the arrangement of dark and light segments 
