THE ENTOMOLOGIST. 123 



a box to pair, and that this happened appeared by the issue. 

 The female laid on the 20th of the month one hundred and 

 twenty-one little eggs; further, other tliirty : they were set 

 here and there by heaps, and fastened with a shining humour 

 or glue, appearing in their natural size and colour like «, fig. 1, 

 table iii.; to the naked eye they seemed smooth and shining, 

 but through the microscope they looked a little rough. At the 

 elapse of eight clays they changed colour and became some- 

 what darker, but at the same time they became crumpled and 

 withered, a proof that they were not wind-eggs, but fruitful : 

 they remained thus all winter. 



"No. 3. — April 18, 1762, the caterpillars came out of the 

 eggs; the day before, the eggs were blacklead-coloured 

 (potloot kleurig), and to the last as transparent as glass, so 

 that I could see the grubs in them with a microscope of two 

 lines focus : at 'c' I picture an egg of this sort thus magnified. 

 The grubs when hatched were very nimble and cheerful, and 

 of the size like 'f/.' They stretched themselves also (ze spanden 

 toen noch), that is, they used only twelve feet in walking, but 

 I could see with a good magnifying-glass that they had already 

 sixteen feet. At first sight they seemed to be of a brown 

 colour, but when I looked at them through the microscope (with 

 an armed-eye) they seemed yellowish with brown rings, black 

 head, and horny shields (dierge lyke schildjes) behind the head 

 or on the first ring. They did not eat up the empty shells of 

 their eggs. I gave them at first burr-leaves, for there were 

 no burr-stalks grown yet, but they let the leaves lie 

 untouched ; on the contrary, they made themselves holes in 

 the stems of them, and thus made ready a way to the inside, 

 where they found their food, with which also they helped 

 themselves until we could give them stalks. But since these 

 grubs, according to their way of living, always kept themselves 

 hid in the aforesaid stalks, it was hard to observe how often 

 they sloughed, and I have only been able to note with 

 certainty that the first sloughing happened when they were 

 eight days old. After this sloughing they walked on fourteen 

 feet, and stretched thus still a little ; but it was not long 

 before they used sixteen feet in walking, — that is all their 

 feet. 



" No. 4. — Their food, as proved above, is the pith only of 

 the burr-stems, and to get at it the caterpillar makes with its 



