230 BEDFORD BLUR BUTTERFLY 



they are very distinctly marked, and frequently many 

 of them are obsolete, or entirely obliterated. 



The caterpillar is pubescent, of a greenish-yellow, 

 deepest on the back ; the head and legs black. It 

 is found on the Buckthorn and Holly. 



The butterdy, which appears twice in the year, 

 viz. in May, and near the end of July or in August, 

 is plentiful in many parts of England. It is of fre- 

 quent occurrence in Kent, Somersetshire, Hamp- 

 shire, and Devonshire ; also near London, and in 

 Norfolk and Suffolk. It is rather scarce in the 

 north, although it is found not unfrequently near 

 Newcastle, in places where hollies abound ; and als 

 in Castle Fden Dean. 



BEDFORD BLUE BUTTERFLY. 



Potyommatus Alsus. 

 PLATE XXXI. FIG. 3. 



Pap. Alsus, Donovan, ix. pi. 322. fig. 1. Lewin, pi. 39. f.3, 4. 



Bedford Blue, Leach Small filue Butterfly, Haworth. 



THIS is the smallest of British Butterflies, the 

 wings sometimes not exceeding 10 lines between 

 the tips, and seldom surpassing an inch. The sur- 

 face is brown, with a silky gloss, one of the sexes 

 slightly tinged with blue, especially at the base of 



