Western China and Eastern Thibet. 371 



small yellow spot or line on the sides of the thorax above 

 the insertion of each coxa, and a similar spot or line on 

 each coxa itself externally ; some small yellow spots under 

 the insertion of the wings. Ninth and tenth abdominal 

 segments slightly pulverulent ; a median yellowish line on 

 the dorsum of the ninth not reaching the extremities, and on 

 this segment slightly before its apex there is a small median, 

 nearly acute, conical tubercle, a slight median carina on the 

 tenth ; appendages shorter than the tenth segment, black, 

 slightly divergent ; vulvar lamina of the ninth ventral 

 segment strong, broadly keel-shaped, its appendages black, 

 filiform. 



Wings hyaline, pale fuliginous, slightly tinged with oliva- 

 ceous at the extreme base and along the costal margin to the 

 nodus ; neuration mostly reddish, the marginal nervures 

 black, the costal nervure whitish pruinose externally; the 

 nodal sector takes its origin slightly before the continuation of 

 the nodal vein (in the male in my possession this sector arises 

 distinctly after the nodal vein) ; pterostigma dull yellow 

 between strong black veins (length 4 millim., broader than in 

 the male) ; about 45 antenodal nervules in the anterior wings. 



Length of abdomen 60 millim. ; length of posterior wing 

 53 millim. 



Considerably larger than the male, with no trace of the 

 red base of the wings so conspicuous in that sex. The colour 

 of the neuration and of the pterostigma resembles that seen in 

 the very immature male described by Kirby as A. basilactea. 



Vestulis smaragdina, Selys. 



One very adult female from Moupin. It differs somewhat 

 from the description and from specimens from the Khasia Hills 

 in my collection. The size is larger (abdomen 43 millim., 

 posterior wing 40 millim.). The abdomen above is metallic 

 blue rather than green, with the ninth and tenth segments 

 conspicuously whitish- pulverulent. The legs (excepting at 

 base) nearly blackish, with the femora brown internally. 

 "Wings hyaline, with scarcely any trace of reddish tinge, but 

 slightly olivaceous at base and along costal margin ; neura- 

 tion almost blackish, dark brown in certain lights. It is 

 probable that most of the differences above noticed (excepting 

 that of size) are due to the individual being highly mature. 



Cah'pha?a consimih's, M'Lach. 

 Four females, two from Siao-Lou and two from Moupin. 



