392 



but to-wards the apex the wings become dusky aud the spots pale brown, margined with 

 white, anal region pale orange, with two small black spots at the base of the tail, and one at 

 the anal angle. Expanse of wings 1^ inch. 

 '• Two specimens taken by Mr. Jonas, near the River Yokawa, about 140 miles N.W. of Yedo 

 [Tokio], are all I have seen of this distinct species." (Jcmson, I. c.) 



The Western-Chinese form (Plate XXX. fig. 18) differs from the Japanese 

 in having two conspicuous white blotches on the upper surface of primaries ; 

 tlie fringes of all the wings are pure white, and on the secondaries are 

 preceded by a white line towards anal angle. Similar to the type on under 

 surface. The white blotches of the Chinese specimens are represented in the 

 Japanese examples by ill-defined pale brownish marks, and it is probably to 

 these marks that Janson refers in his description of Z. enthea when he says 

 disc of primaries lighter." 



One specimen from Omei-shan has the usually large basal spots on under 

 surface of primaries replaced by a small black dot ; the first three spots of 

 central series are confluent, and the orange colour on anal area of second- 

 aries does not form a patch, but simply a dash before the black spot at anal 

 angle and a ring round that in first median interspace. 



According to Pryer this species is on the wing in July, and is abundant at 

 Asama-yama and not uncommon at Nikko. I took some very worn specimens 

 in Yesso at the beginning of August. 



My collectors obtained specimens in Western China at Moupin and Omei- 

 shan in June, at elevations ranging from 4000 to 8000 feet. 



Christoph obtained it in Amurland, and Graeser states that he bred two 

 fine females from some uniformly pale green larvse which he found feeding 

 on Juglans mandschurica. 



Zephyrus attilia. 



Theda attilia, Bremer, Bull. Acad. Petr, iii. p. 469 (1861) ; Lep. Ost-Sib. p. 24, pi. ii. 

 fig. 3 (1864) ; Pryer, Rliop. Nihon. p. 15, pi. iv. fig. 11 (1886). 



" Al:e supra fuacic cilii.H all)is, apicem anticarum versus fuscis ; ala) posticae caudata?. 



"Ala) Hubtus WBruloscenti-albac ; antica) macula discoidali, fascia transversa, fasciis submar- 



ginalibuB intcrruptis duabus (intoriore obsolota) lineaquo ante cilia nigris. 

 "Ahc postica) fascia media recta (angulum analom versus aiigulum acutum formanto) fascia 



intcrrupta submarginali lineaipio auto cilia nigris, maculis duabus aiiguli ani fulvis, nigro- 



iiottttiH. ;{() mm." {Bremer, I. c, Lep. Ost-Sib.) 



]'i ycr says that this is the most abundant " Theda " in the neighbourhood 

 of ^ okoliaina, and that it varies in the markings of botlr surfaces. I liave 



