MESAPIA. 155 



at about three-fourths of the length of the cell, and running 

 obliquely to the costa, the second emitted at or a little before 

 the end of the cell, and slightly arched, the third emitted a 

 little beyond the cell, and running to the costa just before the 

 apex, the fourth emitted about half-way between the end of the 

 cell and the apex, and running to the hind-margin just below 

 the latter. Disco-cellular nervules oblique, the discoidal and 

 median nervules nearly straight. Hind-wings with the upper 

 sub-costal nervule emitted at half the distance between the 

 base and the upper disco-cellular nervules, the nervules running 

 to the hind margin straight, and at nearly equal distances apart; 

 a well-marked basal cell ; two sub-median nervures." 



MESAPIA PELORIA. 



Fieri's peiona, Hewitson, Exot. Butterflies, i. pi. 2, figs. 15, 16 



(1853). 



Mesapia peloria, Kirby, Entomologist, xxvii. p. loi (1894). 

 Aporia iania, Alpheraky, in Romanoff's Mem. Lepid. ii. p. 

 404 (1887). 



Greenish-white, with the nervures broadly margined with 

 grey, and grey spots on the nervures on the hind-margin of the 

 hind-wings. Under side of hind-wings yellowish-white, tinged 

 with orange, with all the nervures strongly bordered with brown, 

 as is also a fold so strongly marked as to look like an additional 

 sub-median nervure below the median ; costal area and basal 

 cell orange. 



The Butterfly measures an inch and a half across the wings. 

 It is found at a great elevation in the mountains of Chinese 

 Tartary and N.E. Thibet. 



This is the only known species of the genus. Mesapia shawii, 

 Bates, from Yarkand, is also a true Pierid, but it is the 



