PIEKIN^. 
33 
248. (2.) Mylothris Trimenia, Butler. 
^ ? Pieris Agathina, Yars. B. and C, Trim., Rhop. Afr. Aust., i. p. 29 
(1862); and pi. 2, f. 2 [c^] (1866). 
Pieris Trimenia, Butl., Cist. Ent., p. 13 (1869). 
Mylothris Trimenia, Butl, Proc. Zool. Soc. Bond., 1872, p. 36. 
$ Tachyris Trimenia, Stand., Exot. Schmett., i. pi. 17 (1884). 
Exp. al, ($) 2 in. 3-4 lin. ; ($) 2 in. 1-3 lin. 
$ Fore-iving loliite, hind -wing lemon-yellow; a common hind- 
marginal roio of nervular black spots. Fore- wing : base very narrowly- 
clouded with black ; costa with narrow but well-dejSned black margin 
from base to a little before apex, where it widens considerably, forming 
an apical blackish tip as in Agathina ; hind-marginal nervular spots 
variable in size, more or less narrowed and pointed baseward, — the spot 
at end of lower radial nervule joined to apical blackish, and the lowest 
spot (at end of submedian nervure) very small. Hind-iuing : hind- 
marginal spots varying in size, more rounded than those in fore-wing, 
one more in number than the corresponding series in Agathi7ia, — the 
additional (seventh) spot being at the end of first subcostal nervule ; 
the middle (third and fourth) spots of this row smaller than the rest ; 
base narrowly blackish about origins of nervures. Under side. — 
Hind-wing and apex of fore-wing citron-yclloio tivged ivith ochreous. 
Fore-wing : costal black almost obliterated by white scaling ; apical 
black only represented by three small spots at extremities of nervules ; 
other hind-marginal spots much smaller than on upper side, — that on 
submedian nervure minute or wanting ; no black at base, but only a 
slight tinge of ochrey-yellow. Hind-wing : costa at base and as far as 
middle edged with orange-yellow ; hind-margin also narrowly tinged 
with the same colour; hind-marginal spots rather larger and better, 
defined than on upper side. 
$ Similar to hut hind-iving paler or deeper creamy yelloio-ochreous. 
Fore-wing : no black at base, but a very faint tinge of yellowish ; hind- 
marginal spots considerably larger (especially that on submedian ner- 
vure), sometimes almost contiguous as far as first median nervule. 
Hind-iving : spots rounder, and usually slightly larger ; no black at 
base. Under side. — As in $, but all the yellow colouring deeper and 
more ochreous, being of about the same tint as in $ Agathina. 
Thorax clothed on the breast with orange-yellow pubescence. 
This near ally of Agathina is easily known by its constantly yellow 
hind-wings (lemon-yellow in the ^5 ochre-yellow in the $) and pure 
white fore-wings in both sexes. The conspicuous orange-red flush at 
the base of the fore-wings on the under side which characterises 
Agathina is wanting in Trimenia ; and the latter constantly possesses 
an additional spot (at the extremity of the first subcostal nervule) in the 
hind-wing, and has the under side of the thorax clothed with orange- 
yellow (instead of white) hair. 
VOL. III. c 
