36 Ois TH13 BUTTERFLIES OF THE GEXUS TERACOLUS. [Jan. 19, 



a pure white underside, and here, too, we can find every gradation 

 o£ colouring linking it to T.phhgetonia. But I can tiud no sufficient 

 reason for separating T. nouna (Luc.) from antlgone, the only 

 difference being that the black borders are reduced and the variable 

 inner marginal bar and the black spot on inner edge of apical 

 patch, both of which are evanescent in T. antujone, have quite dis- 

 appeared in nouna. The latter, again, seems to me identical with 

 T.jamesi, ButL, heujllni (Feld.), and evagore (Klug). In the arid 

 climate of Arabia T. evar/ore appears to be the normal wet-season 

 form, the dry-season form being probably T. saxeus, Swinh., which 

 only differs in having a pink underside. Of the two specimens of 

 T.gelasinus in the British Museum, one has the underside pure white 

 while the other is sparsely irrorated with grey ; on the upperside 

 of fore wings they have no inner marginal bar, but the spot on 

 inner edge of patch is distinct. They thus form an interesting 

 link between T. antigone and the southern dry form, being also inter- 

 mediate in locality, as they come from Angola. With regard to 

 some of the other variations which have been described as species : 

 T. ininans is a variable form ranging across the Contiuent in Central 

 Africa ; it is white below, and the upperside markings show prac- 

 tically every gradation from T. evagore to phlegetoma. T. comptus, 

 from Kilimanjaro, has the transverse bar narrow and sometimes 

 very faint, the spot in apical patch ill-defined, and the marginal 

 spots in hind wing separate but distinct. T. coniger, from the West 

 Coast (Accra), is very similar, but has the transverse bar a little 

 stronger and the nervular spots in hind wing larger and triangular 

 in shape. T. glycera is founded on a single male of T. minans (labelled 

 ? Africa), which while retaining the inner marginal bar has lost the 

 black spot in patch ; the border in hind wings is broad and some- 

 what diffuse inwardly. T. hifasciata I cannot distinguish from 

 T. minans, and, as 1 have noted above, the male of Col. Swinhoe's 

 T. .ranthus and the female of T. odysseus are clearly attributable to 

 this form. T. interruptus, from Angola and S.W. Africa, much 

 resembles T. comptus, but has the spot in apical patch better defined 

 and the nervular spots in hind wing are united into a broad 

 border. T. IucuUks, from Angola and V. Nyanza, are only lightly 

 marked specimens of T. phlegetoi and T. emini is founded on a 

 single male from Central Africa, i. which the black borders are a 

 little deeper than in typical T. phlcjetonia. 



72. Teracolits nivbfs. 



Teracolus niveus, Butler, Proc. Zool. ;. p. 177, pi. xviii. fig. 1 

 (1881). 



Teracolus Candidas, Butler, ibid. p. 178, pi. xviii. fig. 2 (1881). 



An insular form of T. evagore, confined to the island of Socotra. 

 It is a variable species, showing a strong tendency to lose the red 

 apical patch, and the more extreme exampks in this direction 

 have been separated by Mr. Butler under the n ^ .ae T. cundidus, but 

 without sufficient justification, I think. 



