LEUCOPIIASIA. 



481 



about the middle of the wing ; second about equally distant from tlie first and third ; fourtli 

 rather nearer to the third than tliat is to the second. Upper discocellular nervule verj- 

 short, barely visible above. Submedian ncrvure bent near the base. 

 " Posterior w'nKjs obovate. The discoidal cell very small. Subcostal ncrvure 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. Prccostal 

 ncrvure branched ; the inner branch very short and obscure, the outer rather long. 

 " Legs slender, raronychia as long as the claws, very slender. Pulvillus very minute, 

 consisting merclv of a very small fringed cushion, placed between the claws, (juite at the 

 base, only visible below. 



" Abdomen slender, elongate, extending slightly beyond the posterior wings. 



" Larva slender, tapering towards each extremity, pubescent. 



" Pupa elongate, ang-ular, 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 CaUidryas, more than those of Pieris and Anthocharis. It is 

 green, with a lateral yellow stripe. The pupa is elongate, very pointed at 

 each extremity." [Bouhleday^ I. c.) 



Leucophasia sinapis. 



PapUio sinapis, LimiiTeus, Syst. Nat. i. 2, p. 760 (1767). 



Leucophasia sinapis, Lang, Butt. Eur. p. 45^ pi. x. fig. 4 (188i) ; Pryer, Rhop. Nilion. 



p. 7, pi. ii. figs. 7 & 8 (1886). 

 Leucophasia amurensis, Menetries, Schrenck's Reisen, ii. p. 15, pi. i. figs. 4 & 5 (1859). 

 Leptosia sinensis, Butler, Cist. Ent. i. p. 173 (1873). 

 Leucophasia vibilia, Janson, Cist. Ent. ii. p. 272 (1878). 

 Leptosia morsei, Fenton, Butler, Proc. Zool. Soc. Loud. 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 ; beneatli 

 this on each side is a yellow stripe. June and September, the insect being double- brooded. 



3 s 



