94 TERACOLUS. 



iu the British Museum constitute an exactly intermediate seasonal form ; and T. cltreus 

 is the full diy-season form." 



This I thoroughly agree with, but when he says that " T. phillipsii is founded on 

 dwarfed specimens from the Somali deserts," I must decidedly differ from him. He 

 also keeps T. liagore as a distinct species allied to T. pphi/ia, but here again 1 have 

 followed Dr. Butler, who considers that T. liagore is only a phase of T. evanic. 



As regards T. evarne from Wadelai (P. Z. S. 1888, p. 75) Dr. Butler makes the 

 following remarks : — " There are evidently large and small forms of this species, as in 

 the allied T. phillipm from Somalilaud ; hitherto we have received male examples 

 equal in size to that figured by Klug ; the male now received is much smaller and 

 has lost the marginal spots on secondaries. On the other hand, the female figured by 

 Klug is small and evidently belongs to our small male, whilst the female just 

 received is large and heavily marked, and belongs to King's male. It is probable 

 that the small type is the winter form of the species ; but, after all, conjectures are 

 valueless iu these questions." 



In " A Revision of the Genus Teracolus," (Ann. and Mag. Nat. Hist. 69 xx., 

 p. 453, 189/), Dr. Butler writes : — " One of the most widely distributed and variable 

 species of its group, ranging from Upper Egypt and the White Nile to Abyssinia, 

 southwards to the Albert Nyanza, the Victoria Nyauza, and Kilimanjaro, and east, 

 wards to Mombasa. On the western side it appears to be rare, but we have one 

 example (the type of 1\ syrtinus), said to be from ' Senegal,' and a second recorded 

 as simply from ' West Africa.' In ground colour 'f. evarne varies from primrose- 

 yellow to white, the typical form being almost white with yellow diffused bordering 

 to the orange apical area ; this is the wet-season form of the species and the most 

 heavily marked with black. T. xaiitheoarne appears to be the prevalent form of the 

 species in Upper Egyj)t, the White Nile, and Abyssinia, and chiefly differs in its 

 inferior size, yellower colouring, and frequently in the larger orange patch on the 

 [)riuiaries. 2\ syrtinus is an intermediate-season form, which aj^parently ranges west- 

 wards from Mombasa through the Sabaki Valley, past Kilimanjaro and the Victoria 

 Nyanza to Wadelai, and thence across the continent to Senegal, where it varieg 

 slightly from the normal form, the lower extremity of the orange apical patch being 

 indistinctly bordered with blackish, so as vaguely to resemble the wet-season form of 

 '/'. nud'o (nobody, however, with an eye for species could calmly compare the two and 

 for a moment regard them as identical). The males of this form never have the 

 margin of the secondaries dotted, and on the under surface they show a slight 

 tendency to rosy tinting. The females are altogether more lightly marked than those 

 of typical T. eranie. 71 liagore is probably little more than a rare starred albinism 

 occurring in Egypt and on-the borders of the Bed Sea ; in its weak markings it would 



