lEBACOLUS. 55 



August 1896 (C. S. Bettou; Miis. Brit.); Samburu, November (C. S. Betton); Taru, 

 December (C. S. Betton; Butler, P. Z. S. 1898, p. 408). Sabaki Valley (Harapson, 

 Ann. and Mag. Nat. Hist. (G) vii. p. 181 (1891) ; Dr. J. W. Gregory; Butler, P. Z. S. 

 1894, p. 574). Kandera, Central Africa {Emin Pasha; Mus. Brit.; Butler, Ann. and 

 Mag. Nat. Hist. (0) vii. p. 47, 1891). 



This species is allied to T. regiua, but has the purple tip much smaller, aud on the 

 secondaries there is a dark transverse line, which crosses the discal area from the costal 

 margin, becoming more broken up towai'ds the sub-median nervui-e. This band is 

 distinctly visible in both sexes. Another marked distinction is an orange-tipped 

 female. As will be seen by the descriptions given above, there is considerable variation 

 in the females. T. imperator seems to be common in the Mombasa district of East 

 Africa, and extends southward to Delagoa Bay, and to Kandera in the interior. 

 Nothing seems to have been published upon the habits and ti'ansformations of this 

 species. It should be noted that Mr. Guy Marshall has united this species to 

 T. phlegyas, but Dr. Butler keeps them distinct ; and urges that they diflPer both in 

 their " wet " and " dry " season forms. In Dr. Butler's paper on Mr. Betton's 

 collection (P. Z. S. 1898, p. 408) he makes the following remark : " A female whitish- 

 spotted, black-tipped form of the "' wet-season " phase, as well as a magenta-glossed, 

 crimson-tipped example (both new to me) were in the series," 



EXPLANATION OF THE FIGURES OF T. imperator. 



Plate 18, fig. 1. <? . Witu, May 1891 {F. J. J.; Jackson Coll.). 



„ la. Underside of fig. 1. 



„ lb. 2 . Witu, May 1891 (F. J. J.; Jackson Coll.). 



„ Ic. Underside of fig. lb. 



„ Id. 2 ■ ""Ei^st Africa" {3fus. Rothschild), 



,, le. Underside of fig. Id. 



,, If. ^. Mozambique, 12 July 1893 {Br. Answge ; Mus. Rothscliild). 



„ Ig. Underside of fig. If. 



„ Ih. 2 . Zanzibar {Mi{,s. Rothschild). 



„ li. Underside of fig. lb. 



