TERACOLUS. 73 



marginal border decidedly broader and more connected than in the " dry-season " 

 form of T. Iiii/x-ra/nr. 



Undcrxidc. — Similar to that of the '" dry-season " form (fig. le), the secondaries 

 being a little paler as regards their ground colour. 



Expanse 22 inches. {Spec, ex Kibwezi; Jackson Coll.) 



In the British Museum series of T. hacchiis are two females, both of which Dr. 

 Butler considers to be " intermediate " forms. One is an orange-tipped specimen 

 from Mamboio, collected by Mr. Last, from the Godman-Salvin Collection. It is 

 rather darker and more heavily marked than the one figured in my Plate (fig. lli). 



The second is from Lado, collected by Emin Pasha, and it is similar to the 

 specimen figured by me (fig. Ih) as regards its markings, but the apical area of the 

 primaries is white instead of orange. 



The extreme " dry-season " form is at present unknown. 



Habitat. — From Equatorial Africa to the coast of East Africa. 



Equatorial Africa. — Kandera {Emin PasJia ; Mm. Brit.); Lado, August 1884 

 {Emin Pacini; Miis. Brit.); Wadelai, January 1837 {Emin Pasha; Miis. Bril); 

 Butler, P.Z.S. 1888, p. 73. 



British East Africa. — Coast to Teita, December 1891 {F. J. J. ; Jackson Coll.)-^ 

 Tsavo River, January 1892 {F. J. J. ; Jackson Coll.) ; Gulu-Gulu — Kibwezi, November 

 and December 1888 {F. J. J.; Jackson Coll.); Kibwezi, December 1888 {F. J. J.; 

 Jackson Coll.). 



German East Africa. — Mamboio {Last; Godman-Salvin Coll.; Mus. Brit); 

 Kilimanjaro {Bishop Hannington ; Mus. Brit.); Nahinokwe, January 1894 {Dr. J. 

 W. Ansor(je ; Mus. Rothschild). 



This seems to me to be one of the most distinct of all the forms of T. imperator, 

 though I must confess that I am unable to account for all its supposed variations 

 according to season. 



Dr. Butler makes the following remarks : — "Ranges from Lado, north of the Albert 

 Nyanza, southwards to Mamboio and the Nguru hills, and eastwards to Kili- 

 manjaro. 



" The wet-season form is characterised as distinct from T. imperator by its inferior 

 size, the heavy black veining on both surfaces, the well-defined grey internervular 

 spots on the apical border of the primaries in the male, and the rudimentary charac- 

 ter of the transverse band on the under surface of the secondaries in that sex ; it 

 possesses also two forms of female, as is the case with T. ione. The dry-season male 

 is somewhat larger, with the black veins much less defined above, and almost, or 

 altogether, wanting below, the black marginal spots also wanting ou the upper surface 

 of the secondaries. Our two male examples of this form are not quite fresh, and there- 



