METAMORPHOSES OF INSECTS. 41 



104. The antennae of moths are somewhat sword- 

 shaped, tapering from Fig. 32. 



the insertion to the point, 

 and are sometimes frin- 

 ged,Fig32. 



105. The butterflies 

 are diurnal insects, fly- 

 ing only in the day. The 

 moths are nocturnal., sel- 

 dom flying except at 

 night, or after sunset. 

 Some of the small species 



are, however, occasionally seen by day. 



106. Some of this tribe called hawk-moths, have a pro- 

 boscis or tongue, several inches long, by means of which 

 they pump -the honey from the nectaries of flowers. Both 

 butterflies and moths, are furnished with four wings, six 

 legs, a proboscis, and suck honey as their chief aliment. 



107. Change from the chrysalis to the butterfly. 

 Swammardam, one of the oldest and best authorities on 

 the anatomy of larvaB, demonstrated that even before the 

 time when the caterpillar changes into the chrysalis, all 

 the parts of a butterfly may be discovered within its skin. 

 His directions for observing this phenomenon are, to take 

 a full-grown caterpillar^, and having tied it to a thread, put 

 it into boiling water, and take it out soon after ; thus its 

 external skin will separate, and may be easily drawn off 

 from the butterfly, which is contained folded up in it. This 

 done, it is clearly and distinctly seen, that within this 

 skin of the caterpillar, a perfect and real butterfly was 

 hidden. 



108. On examining certain chrysalids, which are cover- 

 ed with a light-colored shroud, and consequently translu- 

 cent, we are able to discover the eyes of the butterfly, as 

 well as its wings, which are of small size, and folded upon 

 the sides. There may also be observed several slender, ribs 

 or divisions, arising from the head, and which, on more 



What is the difference in their time of flying ? What is said of the exist- 

 ence of the butterfly within the skin of the larva ? What is said of the but- 

 terfly in the chrysalis ? 



