ARTAXERXES BUTTERFLY. 245 



Found in some plenty at Castle Eden Dean, ncaT 

 Durham, and also on the magnesian limestone dis- 

 trict near Newcastle, where it occurs in considerable 

 numbers in July. 



ARTAXERXES BUTTERFLY. 



Polyommatus Artaxerxes. 



PLATE XXXIV. Fig. 4. 



Hesperia Artaxerxes, Fabr. — Pap. Artaxerxes, Lewin,~p\. 38. 

 f. 8, 9. — Donovan, xvi. pi. 541. — Polyom. Artaxerxes, 

 Jermyn, Steph. 



Dark brown above, glossy, each of the anterior 

 wings with a discoidal white spot, and all of them 

 with an orange-red band posteriorly, but very indis- 

 tinct on the upper wings. On the under side, the 

 markings of the wings do not differ materially from 

 those of P. Salmacis, excepting in this, that the 

 spots are nearly all without a black pupil. In some 

 specimens, a minute white spot is observable on the 

 disk of the posterior wings on the upper side. 



The history of this little butterfly is somewhat 

 curious. The only locality known, for a long pe- 

 riod, was Arthur's Seat, near Edinburgh, and it 

 is only of late that it has been found elsewhere. 

 Fabricius appears never to have seen a specimen, 

 the description in his System being taken from a 



