152 DMT. A. Chapman on the 
Twenty-four hours later the head, thorax and wings are 
very dark, a nearly black-brown, not quite obscuring the 
underlying green, the wing veins rather paler, a dark- 
ochreous. 
The dark dorsal line hardly visible on thorax owing to 
the general darkening. On the abdomen the darkening 
is not quite so great, so that the brown markings are 
distinct on a brownish-ochreous ground-colour, through 
which the underlying green is still very obvious. The 
abdominal incisions (1 to 6) look double, owing to an 
intersegmental subsegment, present as a very narrow raised 
rib. The hairs are rather more evident, especially in profile, 
of a pale-ochreous tint. 
Later the pupa becomes darker, with little distinet 
marking except the paler wing venation. 
The first imago, ¢, emerged August 9. 
On July 1 a larva, apparently still in the hibernating 
stage, was found on the Eggerhorn on A. vitaliana, it 
rested on top of a small yellow Apanteles cocoon, whose 
tenant had escaped from its host on the left side of the 
first abdominal segment. ‘The larva lived for a further 
ten days. The cocoon gave exit on August 5 not to an 
Apanteles but to a hyperparasite. Inthe search for larvae 
of orbitulus, several of these Apanteles cocoons were seen, 
but were left alone, as their connection with orbitwlas was 
not suspected. 
There is at least one other parasite of the larva of orbitu- 
Jus ; a full-grown larva died and seemed to be hardening, 
and supposing it to be suffering from fungus-disease, it was 
put in pickle, so as not to sacrifice a better example. On 
mounting it, however, it was found to contain an ichneu- 
mon well advanced towards maturity. It was further 
damaged in dissecting larva before its existence was known. 
In the result Mr. C. Morley says in spite of the difficulties 
thus put in his way that he has “ little doubt that it is 
Cremastus bellicosus, Grav. f, an Ophionid Ichneumon.” 
It is obvious, with two parasites detected in my small 
acquaintance with the larva, that its being unattended by 
ants is not due to its baving no enemies, from whom 
ant-protection would be desirable. 
The point of great mterest in this species is the absence 
of the honey-gland. It belongs to the Plebeiid section of 
the Blues, which are generally regarded as the most typical 
of the myrmecophilous Blues. 
