THE SWALLOW-TAILS 



The peculiar double eye-spots on the thorax 

 give a sullen look to the mock face. When it 

 moves it does so by a series of spasmodic glides, 

 which added to the glowering effect of the eye- 

 spots is most disconcerting and terrifying to the 

 bird that stops to look before it leaps. 



This species is very common in the South and 

 is not rare in the North. It is double-brooded 

 and passes the winter as a chrysalis. 



The Short-tailed Papilio 

 Papilio brevicauda (Pa-pil'i-o brev-i-cau'da) 



This species resembles the black swallow-tail in color and 

 in the arrangement of its markings; but it is sharply dis- 

 tinguished by the brevity of the tail-like extensions of the 

 hind wings, as these are only about twice as long as broad ; 

 and in the female the inner row of spots of the front wings 

 are more or less orange and as distinct as in the male. This 

 species is known only from Newfoundland and the shores and 

 islands of the Gulf of St. Lawrence. The wings expand from 

 two and three-fourths inches to three and one-half inches. 



Caterpillar. — This closely resembles the caterpillar of 

 the black swallow-tail. When fully grown it may be green 

 crossed by black stripes, or black crossed by white or pale 

 green stripes. Its scent-horns are bright yellow. 



Food-plants. — Parsley and other Umbelliferas. 



In this species we evidently have another 

 instance of the niggardliness of the cold North. 



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