480 Mr. G. A. K. Marshall on 



often cited as a mimic of L. rltTysipiyioi, var. Jdngii. Now 

 this is by far the commoner form of the female viisiiyims in 

 S. Africa, Avhercas hhujii appears to be extremely rare, in 

 fact the single specimen recorded by Trimen is the only 

 one I know of. How then can it be said to be mimicked 

 by inaria ? Again, misiijpus is recorded in several places 

 in South America, where I believe dirysrpiyiis does not 

 occur. It seems to require further investigation." 



" Uml'omaas Mouth, Natal ; Sept. 3, 1897. — I certainly 

 tliink that I have more frequently seen irypo/irnnas 

 misippus (female) in company with L. chrysippvj^ than 

 with its own male. The latter is fond of haunting the 

 tops of kopjes in company with various species of Precis 

 (which always occur in such localities), but I have never 

 seen the female do so, neither does chrydppius.'^ 



The range of the forms of encedon corresponds remark- 

 ably well with the forms of chrysippus. Mr. Marshall 

 states above that the klugii-\\ke form claira is extremely 

 rare in the south where Ichtgii is absent. Passing north- 

 ward on the east side of the continent it gradually in- 

 creases in proportionate numbers till it preponderates over 

 encedon where Idugii preponderates over chrysippus. On 

 the West Coast all forms seem to occur, but recently the 

 white-hind-winged alcipp)ina (Plate XV, fig. 7) has been 

 found there in greater numbers than elsewhere. (Auri- 

 villius, Rhopalocera Etliiopica, Stockholm, 1898, pp. 583, 

 534; Poulton, Proc. Linn. Soc. Lend., 113th Session, p. 6, 

 Report of Meeting Dec. 20, 1900, where however the name 

 encedon is erroneously printed unicolor.) The distribution 

 of the Lycainid mimic corresponds equally well, marshalli 

 with chrysippus in the south (Mashonaland), dohertyi with 

 the predominant Jdugii in British East Africa. IT. misippus 

 ^ shows upon the whole an almost complete lack of corre- 

 spondence, for inaria is common nearly everywhere, while 

 klugii is confined to the range described on p. 470. In British 

 East Africa, however, inisippus ^ corresponds Avell with the 

 two forms of its model ; while on the west, where alcippus 

 is the only form, the want of geographical coincidence is 

 most striking, for the inaria form is relatively abundant, 

 while neither in it nor in the type-form, so far as I am 

 aware, is there any special tendency towards tiie develop- 

 ment of white in the hind-wings. It is a striking fact 

 that the Acrseinc mimic shoidd exhibit so close a co- 

 incidence with the geographical range of its Danaine 



