

TRANSFORMATIONS OF INSECTS. 



distinct from each other, but are a little altered in form/although 

 not yet enlarged. The sub-oesophageal ganglion is enlarged to 

 nearly twice its original size, and the cords which join it to the 

 brain are shortened, and so are those that connect the second, 



METAMORPHOSIS OF THE NERVOUS SYSTEM OF Vanessa urticcE. 



I. Nervous system of full-grown larva. 2. Half an hour before changing. 3. Immediately 

 after change into a pupa or chrysalis. 4- One hour after changing. (After Newport) 



third, fourth, and fifth ganglions. The last two are separated 

 only by a short interval. The fifth, sixth, and seventh are drawn 

 closer together, the ends between them are disposed in a zig-zag 

 manner, and the longitudinal direction of the nervous chain is 

 in consequence altered. 



" The ganglions, from the seventh to the terminal one, remain as 



