152 TERACOLUS. 



little beyond the centre ol' the wing ; tlie basal area bright yellow. Secondaries 

 entirely reddish-buff, thickly dusted witli brown specklings, the discal line and hind 

 margin being also raoi'e strongl}^ marked. 



Expanse 1"3 inches. {Spec. c\v North East Natal; E. C. Buxton ; Mas. Brit. Type 

 of" T. ^al at III nidi.) 



A second form of the female has only the very faintest indication of any spots on 

 the brown apical area of the primaries ; the brown spots on the hind margin are 

 larger and more pronounced than in the female above described. 



Underside.- — Primaries with the apical area sandy-yellow, no orange colour visible, 

 and only the usual dusky line faintly indicated; tlie inner-marginal line also fainter. 

 Secondaries entirel}'' sandy-yellow, the brownish discal line more connected, although 

 less strongly marked. 



Expanse 1'3 inches. {Sjwc. e.v North East Natal ; E. C. Bnvton ; Mi's. Brit.) 



Habitat. — From Natal to the Zambesi and Nyasa Land. 



South East Africa [E. C. Buxton ; Mas. Brit. Dykes ; Mus. Rothschild). Natal 

 {Mus. Rothschild). Tugela River, 2500 feet, October and November 1896 {G. A. K. 

 Marshall; Miis. Brit.). Bushman's River (.7. M. Hutchinson ; Mus. Brit.). Weenen, 

 October 1893 {Mus. Rothschild.). Delagoa Bay (J/rs. Montciro ; Mus. Brit.). Zulu 

 Land {<t. F. Anyas ; Mus. Brit.). Shire River {Heiritson Coll.; 3liis. Brit.). Nyasa 

 Land {lleicitson Coll.; Mus. Brit.). 



The present species has been the subject of considerable controversy between 

 Dr. Butler and Mr. Guy Marshall. I must admit that the question of the distinctness 

 of T. done from 2\ antiyone is a very difficult one, and I do not consider that we have 

 yet sufficient material to enable us to decide the matter. 



I have, therefore, contented myself with giving illustrations of the various phases 

 of these two species, as determined by Dr. Butler, who remarks as follows : ■'The 

 ' wet' and ' intermediate ' forms of this species are much alike on the upper sui'face, the 

 latter, however, with ochraceous apex to primaries and entire surface of secondaries 

 below, whilst the 'dry-season' form is much more lightly marked above, more rosy 

 and irrorated with brown below; next to T. einini, it is the most heavily marked 

 dry-season form of its group, and notwithstanding its general resemblance on the 

 upper surfiicc to the wet-season forms of 2\ phlec/etonia, I do not consider that we 

 have enough evidence to sink it with its widely differing wet i^base as a mere varia- 

 tion of T. phlegetonia. When it can be y^roiW (instead of r/.v«v/cr/ without proof) that 

 r. einini, T. done, T. anti(/one, T. xanthus, T. interriiplux, and T. yli/ceru are only varia- 

 tions (uninfluenced by locality or climate) of one and the same species, I shall be one 

 of the first to accept the position. At present I regard it as extremely improbable." 



In my opinion, this species is very closely allied to T. einini, and may eventually 



