NORTHUMBERLAND AND DURHAM. 105 



Wood Ltd. Eat. t. 1,/. 11. Pontia Napi, Steph. II lust. 

 Haust. i. 20. Pieris Napi, Staint. Man. i. 19. 

 Var. a. Pontia Sabellicse, Steph. Illust. Haust. i. 22, t. 3, 



/ 3, ^i.— Wood Lid. Ent. t. 1,/ 12. 

 Larva. Hilh. Gescli. Pap. 11. Gen. C. h. 2. — Dup. Icon. i. 

 i;/. 3,/9. 

 Very common, especially in damp fields,' lanes, and marshy 

 places. The first brood appears in May and June, and the 

 second in August. It varies much in the colour of the wings, 

 and in the intensity and clearness of the markings. The P. 

 Sabellicoi of Stephens differs greatly in the shape of the wings, 

 though it seems agreed that it is only a variety of the species. 

 The rearing of both forms from one batch of eggs can alone 

 satisfactorily settle the point. This variety is not very un- 

 common in these counties, and is very perceptible when on the 

 Aving. I have also been accustomed to take a very fine variety 

 in a field, near Hartley, which, besides varying a little in shape, 

 is somewhat larger, and has both the ground colour and the 

 various markings of the wings on both sides more intense and 

 sharper defined than in the type. 



4. Anthocaris, Bois. 

 1. A. Cardamines, Linn. 



Papilio Cardamines, Linn. S. Nat. ii. 7G1. — Don. Brit. Ins. 



V. 83, pi. 16d.—IIub. Pap). 419,420,424,425, 791, 792. 



— Wood Lid. Ent. t. 1,/ 14. Pontia Cardamines, Steph. 



Illust. Haust. i. 23. Anthocaris Cardamines, Staint. Man. 



i. 20. 



Larva. Hub. Gesch. Pap. II. Gen. C. c. 2. — Dup. Icon. pi. 



o,f. 10. — Don. Brit. Ins., ut sup. 



This beautiful Butterfly is generally distributed over the two 



counties, frequenting damp places in fields, lanes, and woods, 



during May and June, where the principal food plant of the 



larva, Cardamine prate7isis, of which it devours the seed vessels, 



occurs. Noticed by Wallis, i. p. 353, as " the orange-yelloiv 



and white Butterfly^^ who adds, " It is one of our first Butterfly 



visitants in the spring, making its appearance in May." This 



