496 Dr. A. G. Butler A Revision 



In its wet-season form this is the most heavily marked of 

 all the crimson-tipped Teracoli. This form is the typical 

 one, and was named by me as T. cinerascens in consequence 

 of Pastor Wallengren's error in describing it as a Thestias ; 

 T. Wallengreni=confusa is the dry-season form ; an inter- 

 mediate form also occurs. 



69. Teracolus Walkeri. 



Teracolus Walkeri, Butler, Ann. & Mag. Nat. Hist. ser. 5, vol. xiv. 

 p. 403(1884). 



Elephant Bay, S.W. Africa. 



This very distinct butterfly was obtained by Mr. J. J. 

 Walker, K.N., about the year 1883. This ardent collector 

 and enthusiastic entomologist appears only to have been 

 able to secure dry and intermediate phases of the species. 



T. Walkeri is, in some respects, intermediate in character 

 between T. Annce and T. pseudacaste, the primaries of the 

 male above somewhat resembling the wet-season form of 

 T. Annce, but the secondaries, from their less heavily spotted 

 border, perhaps approaching nearer to T. pseudacaste ; on the 

 whole, however, T. Walkeri is far nearer to T. Hildebrandti 

 and Annce than to T. pseudacaste and eupompe. 



70. Teracolus pseudacaste. 



Teracolus pseudacaste, Butler, P. Z. S. 1876, p. 156, pi. vi. fig. 11. 

 Teracolus phcenius, Butler, Ann. & Mag. Nat. Hist. ser. 4, vol. xviii. 



p. 488 (1876). 

 Teracolus miles, Butler, op. cit. ser. 5, vol. xii. p. 105 (1883). 



Eanges from the White Nile and Abyssinia southwards to 

 Kilima-njaro. 



My three supposed species were all based upon wet-season 

 examples, T. pseudacaste being based upon examples obtained 

 on the White Nile probably just after the rainy season, the 

 male lightly but the female heavily marked with black above. 

 T. phcenius and T. miles are both typical wet-season forms, 

 the former being more heavily marked with black on both 

 surfaces than the latter and showing less crimson in the apical 

 patch, the lowest spot of which is extremely small. The 

 black veining below is sometimes very heavy, especially in 

 females of the wet-season phase, but in the intermediate 

 phase it almost disappears, though in this species the tips of 

 the veins are always blackened in all the phases. 



Although the wet-season form of this butterfly and of the 

 allied T. eupompe appear to occur together to the north of 

 their range, they differ so markedly in all their phases that I 



