Butterfly.—Pure white, without any red at the tip of the primaries. The transapical black band is broken in the middle, and a black bar closes the cell. The under side is well represented in the plate. Expanse, 1.35-1.40 inch.
Early Stages.—Entirely unknown.
The species is found in Texas.
(5) Euchloë cethura, Felder, Plate XXXII, Fig. 26, ♂; Fig. 27, ♁; form morrisoni, Edwards, Plate XXXIV, Fig. 1, ♂ (Cethura).
Butterfly.—This delicate little insect, for the identification of which the plates will abundantly serve, has been regarded as existing in two varietal forms, one of which has been named after the indefatigable collector Morrison, whose death is still lamented by the elder generation of American entomologists. The varietal form is characterized by the heavier green markings of the under side of the wings. Expanse, 1.25-1.40 inch.
(6) Euchloë pima, Edwards, Plate XXXII, Fig. 33, ♂ (The Pima Orange-tip).
Butterfly.—This beautiful and well-marked species, the most brilliant of the genus, is yellow on the upper side in both sexes. The red of the upper side appears on the lower side. The hind wings are heavily marked with solid green bands. Expanse, 1.50 inch.
Early Stages.—Unknown.
The only specimens thus far known have come from Arizona.
(7) Euchloë genutia, Fabricius, Plate XXXII, Fig. 37, ♂; Fig. 38, ♁; Plate II, Fig. 5, larva; Plate V, Fig. 59, chrysalis; Fig. 6, p. 4, egg (The Falcate Orange-tip).