PIEBIN^. 149 



for some distance from their outer end, and with a discal curved series of intervening 

 blackish-speckled points. Underside. Forewing white ; veins and markings similar 

 to the upperside, but less prominent. Hindwiiig either white, with the base of costa 

 yellow, with the veins slendei"ly black-lined, or the ground-colour is discally tinted 

 with pale yellow and the veins more broadly black lined than on upperside, and the 

 discal row of black points present. Bocli/ blackish ; thorax, head, and palpi whitish 

 haired ; antennae black, with the tip white ; legs black, femora white streaked. 



Female. Upperside white, with the veins slenderly black lined. Foregoing 

 with less defined blackish cell streak, transverse discal and mai'ginal markings. 

 Hindwing unmarked. Underside similar to the upperside, the veins on hindwing 

 more distinctly black lined. 



Expanse, S 2^ to 2f , ? 2^ inches. 



Habitat. — N.W. Himalayas. 



Life History. — " Larva found at Masuri, 7,000 feet elevation, in the latter half 

 of April and beginning of May, feeding in large numbers, socially, on Berheris'' 



Adult Lakva. — " Length 1 inch. Uniformly cylindrical, pubescent ; yellowish- 

 grey, with a broad black dorsal band, which contains two fine longitudinal yellow 

 lines, this black dorsal band extends from the second to eleventh segment inclusive, 

 it is bordered with a narrow yellow mai'gin, below which the sides are pale lilac- 

 grey minutely irrorated with darker. An interrupted yellow line above the feet, 

 margined above and below with black dots ; from above the feet project horizontal 

 and decumbent white hairs, forming a continuous decumbent fringe above the feet. 

 Head blackish with yellowish pubescence ; legs and prolegs fuscous ; spiracles and 

 incisions of segments inconspicuous." 



Pupa. — " Length 9 lines. Bi'aced. Usual Pieridan form ; angulated ; vertex 

 acutely pointed, sternum produced into a nasiform protuberance ; creamy-white on 

 dorsal and pale lavender-grey on ventral surface ; an interrupted yellow lateral line 

 separating these two colours ; speckled with black points forming more or less 

 interrupted longitudinal lines ; wing-cases clear white, with narrow margins and 

 submarginal series of spots on exterior margin ; also median vein and two spots 

 adjacent, black ; margins of the eyes, palpi, legs, anteunEe, and apex of nasiform 

 sternal projection also black." 



Lmago. — " Emerged on May 15th and following days" (Capt. A. M. Lang, MS. 

 Notes). 



Distribution. — " A Himalayan species, and may be seen in some abundance 

 in forests, at altitudes of 6,000 to 8,000 feet. It is essentially a forest insect, not 

 affecting gardens or grassy slopes" (Cap. A, M. Lang, P. Z. S. 1865,489). Col. 

 J. W. Yerbury obtained it at Kala Pani and at Thundiani in May. In the British 

 Museum Collection is a male fi'om Gilgit, N. of Kashmir, taken by Col. Biddulpb, 



