134 Dr. A. G. Butler—^ Revision 



however, certain tliat this difference in the present group has 

 a seasonal significance, though it is certain that it has no 

 specific value, as hitherto supposed. 



1. Ixias Iteinwardtii. 



Thestias Reimoardtii, VoUenlioven, Tijd. Ent. iii. p. 125 (1860) ; 

 Monog. Pier. p. 50, pi. vi. fig. 1 (1860}. 



Lombock, Flores, and Laraut, near Timor. B. M. 



We have nine examples in the Museum series and three in 

 the Hevvitson collection ; one female from the Godman and 

 Salvin collection is unusually black on the upper surface, the 

 white markings on the apical area being very much reduced 

 and those towards the apex obliterated. 



2. Ixias i^ulchrior^ sp. n. 



$ . Allied to the preceding, but the ash-grey suffusion at 

 the base clearer and more restricted, the disk (beyond the 

 orange patch) sulphur-tinted ; the discal interrupted stripe 

 terminating above the third median branch, the outer border 

 and blackened veins narrower. 



The female differs more markedly, the white patches 

 beyond the cell of primaries being washed with orange and 

 widened and extended so as to be continuous with the white 

 area below the cell ; the border of the secondaries is also 

 similar to that of the male, not widened and bordered with 

 grey scaling as in /. Reinwardtii. The under surface of both 

 sexes differs from the latter chiefly in being less marked with 

 black, the general pattern and coloration being very similar. 



Expanse of wings, ^ 58-61, ? 64 millira. 



Bali Island {Wallace). B. M. 



There are four examples in the Museum series and two in 

 the Hewitson collection. 



3. Ixias Piepersi. 



Thestias Piej^ersi, Snellen, Tijd. Ent. xxi. p. 31, pi. ii. figs. 1, 2 (1878). 



Celebes. 



Not in the Museum series. It is a curious insect, com- 

 bining characters of /. Reinwardtii and /. venilia, so that it 

 is difficult to know exactly where to place it in a linear series. 



4. Ixias Kuhni. 



Ixias Kuhni, Rober, Tijd. Ent. xxxiv. p. 287, xxxv. pi. iv. figs. 3, 4 

 (1892). 



Wetter. B. M. 



