228 Bulletin American Museum of Natural History [Vol. XLIII 



this it is evident that they all show a tendency on the under side to a loss 

 of the distinctness of the maciilation and a toning down in the direction 

 of uniformity of surface which causes them to stand in contrast to a 

 series of specimens from farther west. The markings are identical, in 

 their form, but the dark bands and spots are only a few shades darker 

 than the ground-color. The fact is worthy of note. 



(359) 5. Lycaenesthes larydas (Cramer) 



Papilio larydas Cramer, 17S0, Pap. Exot., Ill, p. 160, PI. cclxxxii, fig. 6. 



(For further synonj'inj' consult Bethune-Baker, 1910, Trans. Ent. Sor. London, 



p. 44.) 



The collection comprises twelve males, one taken at Stanleyville 

 in September 1909, the rest at Medje from June to September 1910. 



(360) 5a. Lycaenesthes larydas kersteni Gerstsecker 

 Lycwnesthes larydas var. kersteni Ger.st.eckkr, 1871, Archiv f. Naturg., XXXVII, p. 



359; idem, 1873, Von der Decken's Rei.se, 111, p. 373, PI. xv, fig. 5. 



Three males of this form taken at Faradje in December 1912. 

 There is a marked difference between the specimens of L. larydas com- 

 ing from the hot valle3'S and woodlands of the western part of its range 

 and those from the eastern parts of the African continent. The latter, 

 to which Gerstsecker gave the name cited above, are always paler blue 

 on the upper side, and distinctly paler below. The difference is hardly 

 specific, but is an illustration, one of many, showing that climatic and 

 other influences are at work in producing variations on the two sides of 

 the continent. 



(361) 6. Lycaenesthes lachares Hewitson 



Lycaenesthes lachares Hewitson, 1878, 111. Diurn. Lep., Lycffnidie, p. 225, PI. 

 xci, figs. 33, 34. 

 (For synonymy consult Bethune-Baker, 1910, Trans. Ent. Soc. London, p. 47.) 



One female taken at Medje, July 5, 1910. 



(362) 7. Lycaenesthes rufomarginata Bethune-Baker 



Lycanesthes rnfoviarginata Bethune-Baker, 1910, Trans. Ent. Soc. London, p. 54, 

 PI. II, fig. 14; PI. IX, fig. 20. 



One male captured at Medje, April 5, 1910. 



(363) 8, Lycaenesthes makala Bethune-Baker 



Lyccenesthes makala Bethune-Baker, 1910, Trans. Ent. Soc. London, p. 58, PI. ii, 

 fig. 16; PI. IX, figs. 27, 28. 



One male taken at Medje about the middle of July. 



