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GENUS I. BUTTERFLIES. 



SEC. VII. BLUES. 



Caterpillars not perfeftly known. 



S P. XLII. CHALKHILL BLUE. 



PI. 36. 



Corydon. Linnaus. 

 Chalkhill Blue. Harris. 



This butterfly is on the wing the middle of July : but with the caterpillar we 

 are not in the leaft acquainted. I Ihould fuppofe it to feed on grafs, clofe to 

 the furface of the earth; and from the fize of the fly there is no doubt but that 

 it is fmafl, and moil probably of a green colour, which makes it difficult to dif- 

 tinguifh from its food. The fly is not common : it frequents chalky hills, and 

 dry paflure lands, in different parts of England. The male fly is reprefented at 

 fig. 1 : the female, which is very different in colour, at fig. 2 : and the under 

 fide of the male at fig. 3. 



S P. XLIII. WOOD BLUE. 



Argiolus. Linnaus. 

 Azure Blue. Harris. 



The caterpillars of this fpecies we are likewife unacquainted with. There 

 are two broods of the butterflies in the fummer: the firft is out on the wing the 

 firft week in May ; the latter, the firft week in July. They are inhabitants of 

 our wood lands, but are far from numerous. Flying flowly up and down the 

 avenues of the woods, they may be eafily taken with the fly nets. For the 

 upper parts of the male fee fig. 4. The female is reprefented at fig. 5 : and 

 the under parts at fig. 6. 



