Explanation of Plates. 561 



last, because of the pale tawny ground-colour of the 

 under-side. 

 Fig. 6. Abantis tettensis^ under-side. The under-side of the hind- 

 wings shows strong mimicry of an Acrfcoid type. 

 7. Kededes macomo, var., under-side. The under-side generally 

 shows the incipient mimicry of an Acrreoid type. 



Explanation of Plate XV. 



British East African Butterflies Mimicking L. chrysippu.s. 



Acrseine and Lycsenid mimics of Limnas cluysipiyus form Idugil in 

 British East Africa. Varieties of Acrxa encedon chiefly transitional 

 towards the form dcnra. 



All the figures are about ^^ of the natural size. 



Fig. 1. Limnas chrysippus, iorm king ii :^ ,M.a.Y 2% IQQO. Captured 

 by Mr. and Mrs. S. L. Hinde, at Machakos Road, British 

 East Africa (about 5400 feet). Very faint traces of the 

 sub-apical white band of chrysippus can be detected. 

 la. L. chrysippus, form klnyii, under-side $, Oct., Nov. 1900. 

 Collected by W. Doherty on the Kikuyu Escarpment, 

 British East Africa (6500 to 9000 feet). Distinct traces 

 of the sub-apical white band of chrysippus can be seen. 

 Compare Fig. lo, Plate XIV. 



2. Mimacrsca dohertyi 9, Oct., Nov. 1900. Collected in the 



same locality as Fig. la, by W. Doherty. The position 

 and outline of the costal part of the sub-apical white bar 

 of M. marshalli can be distinctly traced in the contour of 

 the black markings, although the bar itself is oidy very 

 faintly paler than the fulvous ground-colour of the wing. 

 Compare Fig. 2, Plate XIV. 

 2a. M. dohertyi, under-side (^ , Oct., Nov. 1900. Collected in 

 the same locality as Fig. la, by W. Doherty. Traces of 

 position of white bar as in upper-side ; compare Fig 2a, 

 Plate XIV. The black spots on the under-side of the 

 under-wing resemble Acrsea encedon (Fig. 3a) rather than 

 the Danaine model of both insects (Fig. la). 



3. Acrxa encedon, form daira $ , June 6, 1900. Captured by 



Mr. and Mrs. S. L. Hinde, at Machakos, British East 

 Africa (about 5400 feet). Faint traces of the sub-apical 

 TRANS, ENT. SOC. LOND. 1902.— PART III. (NOV.) 37 



