924 LLOYDS NATURAL HISTORY. 



margin is placed at the upper, instead of the middle, median 

 nervule, and the space between this and the anal angle is 

 slightly dentated. 



Recent authors have proposed to restrict the use of Bois- 

 duval's name Rhodocera to one of the largest of the Pieridcc^ R. 

 7nenippe (Hiibner), which is not an uncommon species in South 

 America. It expands about 3^ inches across the wings, 

 which are of a yellowish-green, with a black spot at the end of 

 the cell on the fore-wings, and an orange spot on the hind- 

 wings. The fore-wings have a conspicuous orange-"tip," the 

 inner edge of which extends obHquely beyond the cell ; it is 

 narrowly bordered with black at the apex, along the upper half 

 of the hind-margin, and as far as it extends. The fore-wings 

 are strongly arched, and are slightly pointed, not from the 

 extreme apex being acute, but from the hind-margin being 

 somewhat concave below the tip ; the hind-wings are regularly 

 rounded, and scalloped, but with no short tail. The antennae 

 are red, as in most of the allied genera. 



Kricogonia^ Reakirt, is another small genus of the group 

 foujid in the Southern States of America, Mexico, and the 

 West Indies. The antennae are distinctly clubbed, the palpi 

 are rather long, and the fourth branch of the sub-costal nervure 

 runs to the tip of the fore-wings, which are nearly rectangular 

 at the tip, while the hind-wings are rounded. The type, K. 

 lyside (Godart), measures about two inches across the wings, 

 which are white above, with the base and, more faintly, the 

 tip of the fore-wings tinged with sulphur-yellow. On the under 

 side the hind-wings are greenish-white. 



Dercas^ Doubleday, is a small genus characteristic of the 

 Indian Region. The wings are unusually short and broad, as 

 are also the wing-cells ; the fore-wings have a short, but 

 prominent hook at the tip^ and the hind-wings, which are 

 almost square, have a projecting tooth at the end of the upper 



