ZEPHYEUS. 373 
both colour aud markings. Oberthiir says of his diamantina : " En dessus, 
d'un vert dorc brilliant avec bordure assez large noire." The brilliant golden 
green can only apply to sinaragdina, Bremer, or hrilliantlna, Staudinger*, 
and does not at all express the colour of orientalis, whicli is a pale bluish 
green. The broad black marginal borders are certainly like those of Z. orien- 
talis, var. cognata, but if diamantina were really a form of orientalis, then 
the broad black margins would have rendered the description of var. cognata 
unnecessary. 
Dorries bred this species in Askold, and Graeser (Berl. ent. Zeit. 1888, 
p. 72) says that the larvae are abundant in Amurland on Quercvs mongolica. 
The imago occurs in the middle of July. 
It is found in mountainous parts of Central Japan and Yesso in July and 
August. I have also received specimens from Chang-yang, Central China. 
I should mention that in consequence of my absence from England at the 
time my paper on the Butterflies of Japan and Corea was passing through 
the press I was unable to check the distribution table, hence one or two 
species, including Z. smaragdina, were erroneously included therein as 
occurring in Corea. 
Zephyrus coruscans, sp. nov. (Plate XXVII. figs. 7 ? , 8 <? .) 
Male, Something similar in colour to Z. taxila, var. japoima, but more brilliant ; the black borders 
of all the wings are broader, especially on the primaries, where the band expands considerably 
towards apex ; the tails are longer, and the angulation above them is more produced, giving 
the appearance of a second short tail on each of the secondaries. Under surface darker than 
that of japoniea, but the markings are similar, the principal differences being the broader 
, and straighter white central bands on all the wings, that on the secondaries starts from a 
point nearer the middle of the costa ; the submarginal pair of lines arc widor apart, and the 
outer one is bluish and diffuse ; there is a white spot towards the costa luiar the base of 
secondaries, and another linear one, edged with black, about the middle of abdominal 
margin. 
Female. Deep fuliginous brown ; there are three orange spots on the disc separated by the second 
and third median nervules. Under surface as in the male. 
Expanse, d 47-52 millim., J 4G-50 millim. 
* Staudinger (Rom. sur Lep. iii. p. 130) states that hrilliantina is not separable from 
smaragdina on the upper surface, and that there are only very trifling differences on the under 
surface. The larvae, however, are very distinct and easily distinguished : that of hnlUantina 
feeds on oak, and is copper-coloured, with a dark dorsal line, pale segmental divisions, and a pair 
of oblique streaks on the back of each segment ; the larva of smaraf/dina feeds on cherry, and is 
yellow, with very striking black spots on the first, fourth, and eleventh segments. 
3d 
