74 JouRVAL OF THE MiTCHELL SojiETv [December 



2. Black and white, striped Zebra Swallowtail (Papilio ajax) 



2. Black and yellow, striped Tiger Swallowtail (P. glaucm turnus) 



3. Underside mainly yellow, spread about 5 inches. 



Giant Swallowi;ail (P. thoas). East. 



3. Underside mainly blat^k 4. 



4. Body striped with yellow, hind wings crossed above by an uninterrupted yel- 



low band Palamedes Swallowtail (P. palamedes). East. 



4. Body not striped with yellow, hind wings not crossed by an uninterrupted 



yellow band 5. 



5. Underside of hind wings with two rows of yellow spots 6. 



5. Underside of hind wings with one row of yellow spots 7. 



6. Upper side of wings with usually two rows of light spots, inner row of yellow 



spots on under side of hind wings complete. . . Black Swallowtail (P. polyxenes). 



6. Upper side of wings usually with only one row of light spots, fifth spot of inner 



row on under side of hind wings missing, and replaced by a comet like 

 dash of scales Green-clouded Swallowtail (P. troilus) . 



7. Wings glossy above, j^ellow spots on underside of hind -n-ings enclosed in a 



glossy band Blue Swallowtail (P. philenor). 



7. Wings not glossy, upper side of hind wings with a row of blue spots, under 

 side of wings rather faintly striped with black. 



Tiger Swallowtail (P. glaucus), melanistic female. 



Family II. The Whites and Yellows 



1. Ground color of wings white 2. 



1. Ground color of wings orange or yellow 6. 



2. Forewings falcate, sharp pointed at tip, underside of hind wings marbled 



with greenish, an orange patch at tip of forewing in male. 



Falcate Orange-tip {Anthocaris genutia). Central Section, early spring. 



2. Not as in genutia 3. 



3. Forewings broadly bordered outwardly with black, albinistic females of some 



species of Terias and Colias. See under 6. 



3. Forewings not broadly bordered with black 4. 



4. Wings unmarked, hind wings not buffy beneath. 



Gray-veined White {Pontia oleracea). Mountains, rare. 



4. Wings with some dark markings above 5. 



5. Black markings on upper side of wings consisting of the tip, one or two spots 



on forewing and one on hind wing, these sometimes wanting in spring speci- 

 mens, hind wings buffy beneath Cabbage Butterfly (Pontia rapae). 



5. Forewings with more than two black spots, hind wings unmarked (male), or 



extensively marbled with dusky and white (female). 



Checkered White {Pontia protodice). 



6. Wings aknost wholly yellow, except a row of brown spots along the outer edge 



in the female Cloudless Sulphur {Catopsilia eubule). 



6. Wings broadly bordered outwardly with black 7. 



7. With one or two pearly spots on underside of hind wings S. 



7. With no pearly spots on underside of hind wings 10. 



