146 TERACOLUS. 



seem to be pretty constant. T. Jrlt/a is tlu; iutermediiile i'oim, the females varying 

 considerably, some with the orange apical band very pronounced, some with small 

 orange spots, and others with no orange colour visible on the brownish-black apical 

 area ; again, the ground-colour in some varies from white to sulphur-yellow. 



Of the " dry "-season forms there is a large series in the British Museum which 

 includes T. delpltine, T. li/coris, T. SKhfumoaus, T.Jlunduia, and T. lyceu>i. 



The males vary somewhat in size, some being large and others dwarfed. The 

 markings seem fairly constant with the e.xception that some specimens show a faint 

 dusting of grey along the inner margin of the primaries. 



The variations in the females are numerous, the orange apical band on the 

 primaries being present in both the white and sulphur-yellow ground-coloured forms ; 

 again, specimens with the same ground-colour liave yellow hastate spots in place of 

 the orange markings, whilst others have the apical spots almost obsolete. 



Thanks to the kindness of Professor Poulton, I was recently permitted to 

 examine the typical specimens of T. pseudetrida , in the Oxford Museum. Dr. Dixey 

 brought them to London and after comparison with Dr. Butler of the series 

 in the British Museum, we came to the conclusion that they were females of 

 T. ■s/dj/u///o-s//s, the "dry "-season form of 7'. aiitUjonc ; they consequently have nothing 

 to do with T. jjal/cne (Cf. E. M. Bowdler Sharpe, Monograph of the Genus Teracolus, 

 p. 119), to which species Westwood's misleading description led Dr. Butler to 

 refer them. 



Dr. Butler writes : " When I described the above forms as distinct we had no 

 examples of the very distinct wet-season phases from the south, nor was I aware of 

 the variability or the seasonal distinctions which occur in Teracolus ; therefore when I 

 found half a dozen or more examples which seemed to correspond in the possession of 

 certain characters in both sexes, I naturally supposed that I had difterent species 

 before me. The (iodman-Salvin collection, which was tolerably rich in exa'vples 

 of this species, has enriched our series, adding eight typical examples of T.plilc/jetoiiia 

 (wet-season) from the Cajoe of Good Hope, also five examples of the variety T. minaiis 

 = T. con'icjer from the Cape, as well as seven examples of the drj'-seasun form 

 T. dclphiiic. With our present series I am satisfied that the above synonyms 

 represent one tolerably variable species. I cannot however, believe that T. anln/onc, 

 the wet-season form of which always has both the base and apex of the primaries 

 Ijright lemon-yellow on the under surface, and which has a much narrower internal 

 black stripe in all its forms, is identical with T. done or T. cmiiii. Typical T. (tnliyoiie 

 has no internal stripe. Of the named forms, T. plile^efonia and 2\ luinanx arc wet- 

 season phases, T.J'iija is intermediate, and the remainder are variations ol the dry- 

 season form." 



