528 Mr. G. T. Baker on the distribution of 



becoming less close down the posterior margin to the anal angle. 

 The hind wings are yellowish green, very finely irrorated with 

 brownish grey, with the single central whitish spot as in the (? . In 

 both sexes the wings are somewhat rounder than any of its near 

 aUies, this being specially noticeable in the ? . <? 43 mm., ? 39 mm. 

 This beautiful species was described and figured by 

 Christopb in vol. i., p. 99, pi. vi., fig. 1, of those finely- 

 executed Memoirs by the Grand Duke Eomanoflf. It has 

 only hitherto been recorded from Askhabad, and is the 

 largest of the group, the two specimens before me 

 measuring, 3" 43, ? 39 mm., the <? , contrary to the 

 rule, being the larger of the two. Christopb gives 

 22 mm. as his measurement ; this must refer to the one 

 wing, not the alar, expanse usually meant. 



Anthocharis PecJii, Stgr. 

 Anterior wings white, with the discoidal spot grey, and of an 

 irregular quadrangle in shape ; the apical patch is also grey, with 

 a small indistinct whitish spot just in fi-ont of the apex. The costa 

 is broadly greyish from the discal spot to the base ; base of all 

 wings blackish. The posterior wings are whitish, the dark under 

 side showing somewhat through. Beneath the apex of the anterior 

 wings is greenish yellow, finely irrorated with dark grey ; the dis- 

 coidal spot, which appears through but faintly, is pale grey, with a 

 whitish crescent therein. The posterior wings are greenish yellow, 

 more intensely irrorated with grey, and having the single small 

 whitish spot in the centre. The collar is pale lemon-colour; 

 antennae grey tipped with lemon. Fringes white, greyish at apex. 

 3 , 82—33 mm. ; ? , 36 mm. 



This interesting species was first taken by Wilhelm 

 Pecb, of Budapest, at Lambessa, in April, 1884, and 

 was described by me in the Ent. Mo. Mag., vol. xxi., 

 p. 241. My friend Dr. Staudinger, however, likewise 

 published a description (under the same name), which, 

 owing to a little misunderstanding, appeared somewhat 

 earlier in the 'Ent. Nachrichten ' ; hence the two de- 

 scriptions appearing so close together. 



This insect can be recognised at a glance from any of 

 its predecessors ; the apex is more acute, and the pos- 

 terior margin straighter ; it is also much whiter than 

 either Penia or Tomyris. As yet it has only been taken 

 at Lambessa, where it appears to be very rare, as it has, 

 I believe, only been taken in lb84, when M. Oberthiir's 



