new Species of Planema. 417 
corresponds with the same sex of P. consanguinea so closely 
that the only difference of marking which he is able to point 
out is the slightly smaller size of the basal spots of the hind 
wings. ‘Inthe 9° from Uganda, however, all the yellow 
and red-brown of the wings and body of Planema consan- 
guinea are entirely white,” a most singular statement! He 
means to say that the yellow and red-brown areas of P. con- 
sanguinea are replaced by white in the female from Uganda. 
I must express my positive conviction that this P. albicolor is 
nothing whatever but the rare albino form which constantly 
recurs in many species of Acraa, and which may also exist 
in some species of Planema. It is true, indeed, that the 
white forms of many species of Acrwa have been described as 
distinct, but they always occur with the typical forms as 
either seasonal developments or simple sports; the following 
may be cited :— 
Tawny form. Yellow or white form. 
1. Acrza Johnstoni, ¢. * Acreea flavescens, 3. 
2. 4 / alciope, 9. 4  carmentis, 2. 
3. 4  esebria, dQ. »  protea, ¢ 9. 
4. ,  metaprotea, JQ. »  Monteironis, ¢ ?. 
8. 41, capeeida, G2: »  Cabira, oO. 
6 4, Vinidia, ¢ 9. » tenella, dQ. 
fo) yy, Oganzini, oo. »  lycia, dQ. 
8.  ,,  stenobea, dQ. » cecilia, J? *. 
9. > %,, » -caldarena, o: oO: »  neluska, 9 only. 
HOS: Gan Vacate sis O. 5,  pseudolycia, 2 only. 
ise -;, “marmorate, Jo : 3 | turna, dQ. 
12.  ,,  percussa, d. »  igati, gd. 
Several other species have a white as well as a tawny 
form of female ; so that to found a new species upon a female 
alone, which (to all intents and purposes) differs in nothing 
but its white colouring from its nearest ally, is in the 
highest degree venturesome. Differences of pattern are 
alone to be relied upon in the Acreine, the ground-colour 
varies enormously, the width of the black apical patch 
varies seasonally, the number of spots on the under surface 
varies a good deal in certain species, but the position of the 
spots, the outlines of the bands, and width of the hind wing 
border do not appear to be variable in Planema, or very 
slightly so; but in Acrea the width of the outer border 
varies considerably. 
* This is rather a pale than a white form, and is perhaps a climatic 
variety. 
Ann. & Mag. N. Hist. Ser. 6. Vol. xvi. 29 
