. Bulletin. Natural history; Natural history -- Montana. Under side of hind wings plain yellow. No marks along the veins, rapae. Under side of hind wings marked along the veins, 4. Black border to both wings, monuste. No black border to wings, 5. Under side of hind wings pale yellow, with brownish along the veins, napi. THE PROTODICE BUTTERFLY, OR SOUTHERN V^/HITE. Pontia protodice Bois. and LeConte. Fig. 24. Summer form, protodice, Bd. and Lee. Expanse of wings from to inches, 40 to 45 mm. Male. Upper surface white, fore wings with a broad black dash or bar across the end of the disca
. Bulletin. Natural history; Natural history -- Montana. Under side of hind wings plain yellow. No marks along the veins, rapae. Under side of hind wings marked along the veins, 4. Black border to both wings, monuste. No black border to wings, 5. Under side of hind wings pale yellow, with brownish along the veins, napi. THE PROTODICE BUTTERFLY, OR SOUTHERN V^/HITE. Pontia protodice Bois. and LeConte. Fig. 24. Summer form, protodice, Bd. and Lee. Expanse of wings from to inches, 40 to 45 mm. Male. Upper surface white, fore wings with a broad black dash or bar across the end of the discal cell, and a sub-marginal row of three more or less distinct spots, the last almost or quite touching the hind margin. Traces of rays run from this row to the outer edge. Hind wings without spots. Bars and spots are repeated on the under side. Veins of hind wings are broadly marked with greenish yellow sprinkled with brown seals, and the tips of the fore wings tinged with greenish yellow. Female. Color and spots as in male, but the spots have a tendency to blend, and the outer margin supports a border of triangles connecting with the sub- terminal row of rays. Hind wings with subterminal zigzag blackish line, outer portions sending rays to the margin, where they are somewhat expanded. The base'^of both wings are more sprinkled with dark scales than in the males. Under side similar to that of the male. Winter form, vernalis, Edw. Smaller than summer form, the dark colors more prominent. Spots of subterminal row of fore wings more inclined to be connected. Fig. 24. Venation of Pontia. Expanse scarecely inches. Body black, (P. protodice) with some white hairs and scales. Distribution—This insect is usually known as the Southern Cabbage butterfly, though it is to be found everywhere east of the Rocky moun- tains. It is injurious in the larval state in the southern states. In the northern states P. rapae is more common, in many places driving out protodice. There are several
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