14 



THE CATERPILLAR. 



rodes Eurydice, X 2 ; 

 a, front view ; &, Bide 

 view. 



latest researches of Kowalevsky seem to point 

 very directly to the conclusion that the head is 

 composed of five primordial seg- 

 ments. 



But the head, as it appears 

 when the caterpillar fairly makes 

 PIG. i9.-Head of its entrance into the world, is a 



caterpillar of Saty- . 



little globular 



case,* bearing be- 

 neath an astonishing number of 

 movable organs, and having the 

 upper part divided down the mid- 

 dle by a suture, which forks in 

 passing down the face, leaving a 

 triangular piece at the very front . Fie.2o.-AnaeaAn- 



dria ; Z, head of cat- 



[Fig. 21]; this triangular piece ^ ,*%*$ 

 bears the upper lip, a little flap of S?5fhSof > SJ; 

 membrane with a swing forward JfSSS/SSti^stoge; 

 and backward by means of the 

 hinge which unites it to the triangle. Directly 

 behind this come a pair of stout biting jaws or 



* The head of the newly-born caterpillar always lacks those 

 prominences which frequently adorn the crown of the same 

 creatures at later stages [Figs. 19, 20]. In the goat-weed but- 

 terfly (Anaea Andria) these attain their greatest size in the second 

 stage, and afterward gradually disappear, so that the head of the 

 full-grown caterpillar is as unbroken as when newly hatched 

 (compare Fig. 20, b, d, e), while ordinarily these prominences in- 

 crease in size with every moult, and may attain extraordinary 

 dimensions (See Fig. 19 and Figs. 183 and 135, i,j, &, I, m). 



