ZEPHYRUS. 65 



Dipsas, Westwood, Gen. Diurn. Lepid. p. 479 (1852) ; 



Hewitson, 111. Diurn. Lepid. p. 64 (1868). 

 Auroiis\ Dalm. /. c. pp. d^i^ 90(1816). 



The type of Zephyrus is Z betulcj^, and that of Aurotis is 

 Z. qiteniis. Ruralis^ used by Barbut for Z. betulcc^ is hardly 

 admissible as a generic name. 



Antennae with a long, gradually-formed club ; palpi short 

 and slender, hairy and scaly ; eyes hairy. Fore-wings with the 

 sub-costal nervure four-branched, the two first branches thrown 

 off before the end of the cell, the two last forming a small fork 

 at the apex ; upper radial nervule branching from the sub- 

 costal nervure a little beyond the cell ; fore-wings often with 

 a patch of raised scales in the male. 



This is a Paloearctic genus of limited extent, ranging as 

 far as Northern India and California. There are only two 

 European species, which are considerably larger and more 

 robust than the species of Thecla. The genus attains its 

 maximum of development in Northern India, China, and 

 Japan. The colours are blue^ green, orange, or brown, and 

 the sexes generally differ considerably, which is not the case in 

 Thecla. 



The pupa of this genus is smooth, and appears not to be 

 attached, but to be placed on or under ihe surface of the 

 ground, among leaves. 



The type is 



I. I HE BROWN HAIR-STREAK. ZEPHYRUS BETUL.^. 

 {Plate XLIV. Figs, i d", 2 ? , 3 nnJer-sidc.) 

 Papilio betuliB, Linnaeus, Syst. Nat. (cd. x.) i. p. 482, no. 146 

 (1758) ; id. Faun. Suec. p. 282 (1761); Esper, Schmctt. i. 

 (i)p. 256, pi. 19, fig. I (1777); Hiibncr, Eur. Schmctt. 

 i- figs. 383-385(1803?). 



10 F 



