rossii Stefanelli, 1900] are treated by us as forms of a separate species in accordance with the observations of Count Emilio Turati communicated to us by letter.

The larva is not yet known, but the shape of the pupa appears to afford sufficient proofof the specific distinctness of the insect.

(20 d) is beneath not much lighter than manni, and also above the black markings are only slightly reduced, though being dusted with white.

Compared to Pieris rapae, the cabbage-pest small white, the forewing spot is larger and squarish or even crescent-shaped rather than round.

[2] Until recently P. mannii has been confined to South Europe, Asia Minor, Morocco and Syria.