LEUCOPUASIA. 481 
about the middle of the wing ; second about equally distant from the first and third ; fourth 
rather nearer to the third than that is to the second. Upper disooceUular nervule verj' 
short, barely visible above. Submedian nervure bent near the base. 
" Posterior winr/s obovate. The disooidal cell very small. Subcostal nervure branching beyond 
the middle of the wing. Discoidal nervure thrown off from the subcostal about midway 
between the bifurcation of the latter and the base of the wing, much bent at the end of the 
cell. Lower discocellular nervule short. Submedian nervure bent near the base. Precostal 
nervure branched ; the inner branch very short and obscure, the outer rather long. 
"Legs slender. Paronychia as long as the claws, very slender. Pulvillus very minute, 
consisting merely of a very small fringed cushion, placed between the claws, quite at the 
base, only visible below. 
" Abdomen slender, elongate, extending slightlj' beyond the posterior wings. 
" Larva slender, tapering towards each extremity, pubescent. 
" PnPA elongate, angular, not arched. 
" In general the species of this genus frequent open places in woods, flying 
not very rapidly, with an undulating unsteady motion. Our own species 
occurs both in the spring and autumn. Those of the autumnal brood, almost 
entirely wanting the black at the apex, have been formed into a species by 
Hiibner, under the name of P. erysimi. 
" The larva feeds on various Papilionaceous plants, especially Vicia cracca 
and Lotus corniculatus ; resembling in this respect those of the genera Terias, 
Colias, and Callidryas, more than those of Pieris and Anthocharis. It is 
green, with a lateral yellow stripe. The pupa is elongate, very pointed at 
each extremity." {Douhledaij, I. c.) 
Leucophasia sinapis. 
PopiUo sinapis, Linnreus, Syst. Nat. i. 2, p. 760 (1767). 
Leucophasia sinapis, Lang, Butt. Eur. ^. 45, pi. x. fig. 4 (188i) ; Pryer, Rhop. Nilion. 
p. 7, pi. ii. figs. 7&8 (1886). 
Leucophasia amurensis, Menetries, Schrenck's Reiseii, ii. p. 15, pi. i. figs. 4 & 5 (1859). 
Leptosia sinensis, Butler, Cist. Ent. i. p. 173 (1873). 
Leucophasia vibiiia, Janson, Cist. Eat. ii. p. 372 (1878). 
Leptosia morsei, Fenton, Butler, Proc. Zool. Soc. Lond. 1881, p. 855. 
" Expands from l-37-l'68 in. Wings white, fore wings with dusky coloured spots at the tips, of 
a roundish shape, and darker in the male than in the female. Hind wings white. Underside : 
fore wings white, faintly marked with greenish yellow at the tips ; hind wings with dusky 
shading, and one white and several greenish spots. Head, thorax, and abdomen black ; 
antennae black, with white flattened clubs. 
" Larva green, with a darker stripe on the back where the dorsal vessel shows through ; beneath 
this on each side is a yellow stripe. June and September, the insect being double- brooded . 
