224 



NATURE-STUDY REVIEW [13:6— Sept., 1917 



The Giant Swallowtail. — This is the largest butterfly in North 

 America. It is a southern species and its caterpillars attack the 



leaves of citrus fruits. It is a 

 ^^^^ disagreeable looking creature, 



Caterpillar of Giant Swallowtail. 



colored to imitate bird lime, 

 and when disturbed, erects 

 its head, throws out its scent 

 horns and fills the whole 

 neighborhood with an almost 

 unbearable stench. It also 

 feeds upon prickly ash and 

 lombardy poplar and is some- 

 times found in the North. 

 The butterfly is magnificent and creates the greatest excitement 

 when it appears in the Northern States as it sometimes does in 

 late summer. 



The Zebra Swallowtail. — The wings of the zebra are barred with 

 blackish and greenish white which make it a striking butterfly. 

 The length of its graceful 

 tails is dependent upon 

 the lateness of the sum- 

 mer. It is common in the 

 Southern States where it 

 goes through several gen- 

 erations each year. The 

 caterpillar feeds upon 

 pawpaw, spicebush and 

 huckleberry. 



The Green-clouded Swal- 

 lowtail. — The wings are 

 black; the front wings 

 with a row of pale straw 

 colored spots near the The Zebra Swallowtail 



outer margin thp hinH The w{n ^ s are barred with blackish and greenish 

 outer margin, the hind white Near the base of each tail . like pro . 



wings are powdered with longation of the wings is a blood red spot, and 

 yellow - green or blue - be y° nd this aje two P ur P lish blue crescents, 

 green scales and each bears an orange spot at the middle of its front 

 edge and one at the hind angle. Six pale crescents form an inside 

 border to the hind wing. The tails to the wings are paddle- 

 shaped and rather short. The caterpillar feeds upon spicebush 



