New or little-known forms of Acraea. 409 
f. carpenter? nom. nov. 
= orestia f. humilis, Eltr., Trans. Ent. Soe., p. 305 (1912) 
(part). 
Mr. Riley has recently called my attention to several 
examples of a form of Acraea doubledayi which shows 
marked differences from the typical form of that species. 
Acraea doubledayi £. riley. 
g. Expanse about 52 mm. F.-w. less pointed at apex and less 
concave along hind-margin than in typical doubledayi. Ground- 
colour pale dusky pink dusted with brown at base, spots smaller 
and markings generally paler. 
H.-w. dull pink with markings as in doubledayi but fainter, and 
hind-marginal border narrower. 
Underside resembles that of doubledayi but the spots are smaller. 
2 resembles 3. 
Toma, Abyssinia. Mus. Brit. 
The genitalia of this form are similar to those of typical 
A. doubledayt. 
I append herewith Prof. Poulton’s description of a new 
form of A. encedon. 
A. encedon f. commixta, Poulton, f. n. 
The pattern of this form is made up of the hind-wing 
of alcippina combined with the fore-wing of infuscata in 
which the subapical bar is not white, but tawny or smoky- 
brown. The fore-wing thus approaches that of daira, 
but differs in the retention of the black apex. 
Commixta occurred several times (although to a variable 
extent) among Mr. Lamborn’s captures and bred families, 
and its pattern is strongly hereditary. Commixta re- 
sembles albinus, Lanz, itself a rather rare combination of 
two forms of Danaida chrysippus, alcippus and dorippus. 
In spite of the resemblance the two forms are not related 
as mimic and model. It is, in fact, probable that they do 
not meet. Albinus is most often met with in N.E. Africa, 
while commixta has up to the present time been observed 
only in collections from the West Coast, although there can 
be little doubt that it exists in Uganda and probably 
occasionally on the Kast Coast. 
Type in Hope Department, Oxford. 
In the Brit. Mus. ‘Coll. there are 2 ¢¢,299 from 8. 
Leone, 3 3 5 from Nigeria, and 1 2 from Old Calabar. 
