[483] Reaum. iv. 604.
[484] Ibid. 364. N. Dict. d'Hist. Nat. xx. 365. Huber Fourmis 78. M. Huber does not say expressly that the grubs of ants do not change their skin; but his account seems to imply that they change it only previously to their metamorphosis.
[485] Lyonnet 11.
[486] N. Dict. d'Hist. Nat. vi. 290.
[487] De Bombycibus, 68.
[488] Opusc. i. 27.
[489] Linn. Trans. x. 399.
[490] N. Dict. d'Hist. Nat. vii. 129.
[491] As the larvæ of Ephemeræ usually live in the submerged part of the banks of rivers, perhaps they may be regarded as following the economy of subterranean terrestrial larvæ.
[492] 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.