186 THE ENTOMOLOGIST’S RECORD. 
A. archippus in a pine grove not far from the town. ‘The trees were 
literally festooned with butterflies within an area of about an acre, and 
were clustered so thickly that the trees seemed to be covered with 
dead leaves. Upon shaking some of the trees a cloud of butterflies 
flew off, and the flapping of their wings was distinctly audible. They 
hung in rows (often double) on the lower dead branches, and in 
bunches on the needles. Towards evening the flock received additions 
every moment, and, a net full being caught and liberated, all but 
three returned to the flock. During his visit two more flocks were 
observed not far from the first but neither was so large. He 
also observes that he had seen A. archippus flocking at the Isles of 
Shoals, New Hampshire, in very much the same manner, after haying 
flown nine miles from the mainland.”’ One remark made by Thaxter, vz., 
that he ‘‘often observed examples of A. archippus, in cotti,” is suggestive 
that the species would not hybernate, as there is as yet we believe, 
no record of a butterfly pairing in autumn and then living through 
the winter. It occasionally happens, however, among hybernating 
moths. Mundt reports (loc. cit., xi., p. 239) that, on September 7th, 
1879, at Fairburg, Illinois, while walking through a grove, he saw a 
large number of A. archippus hovering about and settling upon some 
limbs of a hickory, and on the next day, before sunset, he found the 
butterflies in still larger numbers on two branches of the tree. After 
dusk he visited the grove with a long step-ladder, box and lantern, and 
took 51 males and 74 females, all of them being perfect. He adds 
that ‘‘ the weather had been pretty cold for several days, with slight 
frost at night.” Moffat records (loc. cit., xi1., p. 387) them as ‘‘ con- 
gregating in immense numbers, with their wings closed, and not 
noticeable unless disturbed, very few being on the wing. Their 
favourite resting-place seemed to be dead pine twigs, which would be 
drooping with their weight. In going to and from the woods I have 
seen several of them at once coming from different directions, high in 
the air, sailing along in their own easy and graceful way, all con- 
verging to the one spot. There were thousands, perhaps hundreds of 
thousands of them. The following year they were remarkably scarce, 
and it was three years before they were again even moderately plentiful.” 
On the emergence of Listrodromus quinqueguttatus, Gray., with a 
description of its pupa. 
By CLAUDE MORLEY, F.E.S. 
My friend Mr. R. M. Prideaux, to whose generosity I owe many 
good insects, sent me, upon the 11th of May last, two pup of Cyaniris 
argiolus, each containing a single pupa of Listrodromus quinqueguttatus, 
Gray., from last autumn’s ivy-feeding larve. The similarity of the 
parasitic pupa to its imago is to be seen in the tumidulous scutellum 
and the neuration of the wings, which, though of the same colour as 
the cells, is much elevated and inflated. In colour it is yellowish- 
white; the mesonotum and mesosterna are black, with the interpec- 
toral line pale. The eyes are nigro-castaneous, and the ocelli and 
mandibular teeth, of which the upper is slightly larger than the lower, 
are castaneous and widely distended. All the limbs are detached and 
visible, the antenne wings and lees being enclosed in separate 
sheaths, and the organs neatly folded upon the breast. The thorax is 
