PIERID^. 37 



Cape. Congo. North India. Ceylon. Coll. Brit. Mus. 

 Damaraland. Coll. C. J. Andersson. 

 Ceylon. Coll. S. A. Mus. 

 " Natal, universally " Boisd., Voy. de Deleg. 

 " Madagascar and neighbouring small islands, Bengal, 

 Coromandel, &c." Boisd. Faune de Mad., &c. 

 Madras. Coll. E. I. C. Mus. 



22. Pieris Zochalia. 



Pieris Zochalia, Boisd., Sp. Gen. Lep., I, p. 506, n. 100. 

 ,, ,, App. Voy. de Deleg., p. 586. 



Expands 1 in. 5 lin. 2 in. 1 lin. 



White ; with black markings. Fore-wing : basal half of 

 wing with a brilliant pearly gloss ; a short black disco-cellular 

 stripe from costa, contracted in its middle portion, broader 

 in the ? ; a deep-black band on hind-margin, narrowing 

 to a point at anal angle, irregularly excavate on its inner 

 edge, and generally containing four or five sub-triangular 

 white spots, which are occasionally almost obsolete. Hind- 

 wing: sometimes rich creamy-yellow instead of white ; generally 

 a thin black line or streak at extremity of discoidal cell ; on 

 costa, beyond middle, a curved, transverse black streak ; on 

 hind-margin a row of six sub-rhomboidal, black spots, generally 

 united by an inner, regularly -festooned, black streak, which 

 touches their inner extremities ; base slightly glossed with a 

 pearly lustre. UNDERSIDE. Forewing : similar in marking ; 

 base generally suffused with bright-yellow ; spots in hind- 

 marginal band much larger than on upper-side, of a pale 

 greyish-yellow, only separated by the black-clouded nervules. 

 Hind-wing : entirely pale greyish-yellow ; all the nervules 

 broadly dejined with black ; spot on costa and festooned streak 

 as on upperside ; spots on hind-margin much thinner than on 

 upperside ; costa at base edged with bright-yellow ; a bifid 

 black longitudinal streak in discoidal cell, and a simple 

 similar streak between median and sub-median nervures, not 

 reaching to base ; a short, transverse, black mark from 

 extremity of discoidal cell to near middle of sub-median 

 nervure. 



Woods and copses ; rarely in gardens. 



September (e) May (m) 



The rich deep-black of the bands and spots of this lovely Butterfly, con- 

 trasted with the glossy white and yellow, makes it one of the most striking 

 species of the Genus. It is an active flier, and may generally be found 

 flying along the edges of woods, or the open spots on the outskirts, settling 

 frequently on flowers. It seldom rises to any elevation, and is, conse- 

 quently, not difficult to capture. It appears to be only found in Southern 

 Africa. 



