PIEEIS. 453 
orieufis, but he considers tliat it is probably the large summer form of P. napl. 
In coming to this conclusion Dr. Staudinger must have omitted to note that 
Oberthiir distinctly says that his types of orientis were taken in May. I have 
received specimens from Moupin and other parts of China which agree 
exactly with erutce, Poujade, but so far as I am aware no form of P. napi 
has been met Avith in any part of China. The spring form occurring in 
Posiette Bay has been named dulciiiea by Butler ; Staudinger, who ignores 
Butler's dnlcinea altogether, describes var. veris, a very similar form from 
Askold, the locality from which Oberthiir's orieiitis was obtained. Veris 
differs from dulciiiea in being without black spots on primaries and in having 
the under surface of secondaries greenish and the veins more strongly bordered ; 
the apical patch in both forms is more like that of P. napi than of P. melete. 
In my opinion none of these varietal names for the spring brood are worth 
retaining, as in every locality where it occurs the specimens of this brood 
exhibit more or less variation in the character of the black markings. 
Graeser (Berl. ent. Zeit. 1888, p. 67) states that he met with young larvae, 
which resemble those of P. daplidice, feeding on a cruciferous plant growing 
on an island in the Kiver Amur. Pryer, who bred the summer form, melete, 
from ova deposited by a female of the spring form, gives Arabis hirsuta as the 
larval food-plant. 
Mr. Elwes, in discussing P. melete (Traus. Eut. Soc. Loud. 1888, p. 416), 
seems to refer to the female sex only, as he compai-es his Sikkim specimens 
with bryonice, which is a form of female P. napi, and with the figure of ajaka, 
Moore, which also represents a female. He states that there appears to be 
no brood in India agreeing with the summer form from Amurland and Japan, 
and records the species from the Khasia hills in September, and also from 
the interior of Sikkim. 
The following table will show the geographical distribution of the different 
named forms of the two broods of P. melete : — 
Spring brood : 
aglaope, Motschulsky ; Japan. 
megamera, Butler ; Japan. 
dnlcinea, Butler ; Posiette Bay. 
orientis, Oberthiir ; Askold and Moupin. 
veris, Staudinger; Amurland. 
erutce, Poujade ; Moupin. 
