66 Dr. A. G. Butler on the Old- World 



Section III. 



The basal portion of the median nervure of the primaries 

 in the males up to the emission of the first branch edged 

 with thickened scales having an opaque appearance when 

 held to the light. 



This section is the most perplexing in the genus and 

 includes all the allies of T. hecabe and T. rahel. 



26. Terias Jloricola. 



Xanthidiafloricola, Boisduval, Faun. Madag. p. 22, pi. ii. fig. 6 (1833). 

 Terias ceres, Sj Butler, Ann. & Mag. Nat. Hist. ser. 5, vol. xvii. 

 p. 218 (1886). 



Mauritius and Madagascar. 



T. jloricola is the wet-season form and T. ceres the dry; 

 the female referred by me to T. ceres belongs to the following 

 very closely related form, which may perhaps be only a race 

 of the same species, possibly only a variety. 



27. Tei'ias hapale. 



$ 5 . Terias hapale, Mabille, Le Nat. ii. p. 99 (1882) ; Grand. Madag. 



pi. xxxii. figs. 6, 7. 

 c? 5 . Terias Boisdiivaliana, Mabille, t. c. p. 253, pi. xxxii. figs. 4, 4 a, 5. 

 c5' $. Terias cethiopica, Trimen, S. Afr. Butt. iii. p. 21 (1889). 



Madagascar, Africa generally, i^rabia. 



T. hapale = Boisduvaliana is the wet-season form and 

 T. cethiopica = ceres ? the dry-season form. We have 

 forty-seven examples of this butterfly, and (apart from sea- 

 sonal variation) they seem to be wonderfully constant, the 

 females only varying in the length of the outer border of the 

 primaries, which, in the variety referred to T. Desjardinsii 

 by M. Mabille, is very limited. 



28. Terias anjuana. 



Terias anjuana, Butler, Ann. & Mag. Nat. Hist. ser. 5, vol. xv. p. 189 



(1879). 

 Terias decipiens, Butler, I. c. 



Island of Johanna. 



T. anjuana is the wet-season form, T. decipiens is inter- 

 mediate, and a small lemon-yellow male which I identified as 

 the W.-African T. brenda may possibly be an aberrant dry- 

 season form, but shows none of the characteristic markings 

 on the under surface. 



