Note 492 — LETTER XXX. (continued 2)

A caterpillar nearly answering to the description of that of Bombyx camelina, which I found upon the hazel, after a few days produced sixteen grubs of some Ichneumon. At first these grubs were green, but they became gradually paler; and after a day or two became pupæ. But I mention this circumstance here for another reason: upon examining them after this last occurrence, I observed that they adhered to the lid of the box in which I kept the larva, arranged somewhat circularly; and at a little distance from the anus of each was a pea-green mass, consisting of about eight oval granules, which appeared like so many minute eggs. These were the excrement evacuated by each grub previously to its becoming a pupa. The appearance of this little group, with their verdant appendage, formed a curious spectacle: they are still pupæ, July 30, 1822.