390 Dr. A. G. Butler—^ Revision 



wards as far as Beliicliistan, both dry- and wet-season forms 

 flying together ; the form with yellow under surface, which 

 is tlie wet-season representative, is T. puellaris^ and that with 

 tJie apex of primaries and the whole of the secondaries sandy 

 buff on the under surface, whicli is the dry-season type, is 

 T. ochreipennis {'=T. roriis). We have both forms captured 

 on the 29th of June and in November. It is therefore 

 evident that, as in some other dry localities, the seasonal 

 forms in this species represent mere varieties which appear 

 simultaneously. Among Hewitson's examples of 7'. phisadia 

 is a male of the wet-season form labelled " Aden " ; but this 

 must surely be an error, unless the white females referred to 

 T. phisadia, and obtained at my request by Col. Yerbury, 

 flying witli the latter species, actually belong to the dry-season 

 variety of T. puellaris. This, however, is extremely im- 

 probable *. 



6. Teracolus vestalis. 



Teracolus vestalis, Butler, P. Z. S. 1876, p. 13-5, pi. vii. tig. 10. 

 Teracolus intennissus, Butler, P. Z. S. 1883, p. 152, pi. xxiv. tig. 4. 

 „ Teracolus peelm, Swinhoe, P. Z. S. 1884, p. 438, pi. xxxix. fig. 9. 

 Teracolus dubius, Swinhoe, t. c. p. 439. 



Occurs from Kutch througii Karachi and Beluchistan to 

 the coast of Persia. The varieties representative of seasonal 

 forms in this species fly together in April, May, and June ; 

 but we have only received the dry-season types as obtained 

 in November and December. The wet-season type is typical 

 T. vestalis (= T. dubius) ; the dry and intermediate types are 

 represented by T. intennissus, of which T. peelus is only a 

 yellow female form, Swinhoe's supposed male being merely a 

 small example. 



7. Teracolus castalis. 



Idmais castalis, Staudiuger, Exot. Sclimett. p. 43, pi. xxiii. (1884). 



Originally described from an imperfect example obtained 

 at Taita, E. Africa; it has subsequently been received from 

 Mombasa and from Somaliland. In the Museum there is 

 one male from Mombasa of the typical wet-season form. 



T. castalis is the African representative of T. vestalis, from 

 which the longer costa of the primaries, the broader black 

 apical and costal borders of these wings, and the distinctly 

 spotted border of the secondaries readily distinguish it. 



* Hewitson's utter disregard of the importance of correct habitats is 

 evidenced by the fact that fully half his specimens bear no indication of 

 locality. 



