PIERID^E. 6y 



Interior of South Africa. Sierra Leone. St. Vincent 

 (Cape Verd Islands). Coll. Brit. Mus. 



King William's Town (Mrs. Drake). Coll. W.D'Urban). 

 Knysna. Coll. mihi (? Florelld). 



" Bay of Port Natal." " Senegal. Guinea Coast." Boisd. 

 " Somauli-land, East Africa." Felder, Lep. Fragm. 



46. Callidryas Rhadia. 



Callidryas Rhadia, Boisd., Sp. Gen. Lep., I, p. 617, n. 11. 

 ,, App. Voy. de Deleg., p. 588. 



Callidryas Castalia, DoubL, Westw., Hewits., Gen. Diurn. 



[Lep. 



Expands 2 in. 3 lin. 2 in. 10 lin. ( ? ). 



$ . " Habit and size of Drya. Upper surface without 

 spots, as in the $ of Eubule. [The $ of Eubule is sulphur- 

 yellow, without spots, and has on hind-margin minute ferru- 

 ginous dots at extremities of nervules.] UNDER-SIDE. 

 Citron-yellow. Fore-wing : at extremity of discoidal cell a 

 transverse, brick-red mark, intersected by two thin, yellow 

 nervures. Hind-wing : a silvery disco-cellular spot, circled 

 with red ; succeeded by several indistinct, ferruginous dots, 

 disposed in the form of a transverse band, and sometimes 

 scarcely visible." Boisd., Sp. Gen. Lep. 



? . Sulphur -yellow. Fore-wing : a round, black, disco- 

 cellular spot ; an indistinct, curved row of ferruginous spots 

 from costa near apex ; on hind-margin, a row of rather large, 

 united, ferruginous spots, forming a narrow border, dentate 

 on its inner edge. Hind-wing : no spot at extremity of dis- 

 coidal cell ; on hind-margin, a row of small, ferruginous 

 dots at extremities of nervules. UNDER-SIDE. Rich ochreous 

 yellow, inclining to orange, irrorated with ferruginous dots or 

 lines. Fore-wing : much paler on inner-marginal portion, 

 which is not irrorated ; a dusky-blackish, disco-cellular spot, 

 centred with pale-violet ; an indistinct trace of the reddish 

 band from costa near apex ; on hind-margin, a series of 

 ferruginous dots at extremities of nervules. Hind-wing : 

 three silvery spots in ferruginous rings form one disco-cellu- 

 lar marking ; beyond which is a row of more or less distinct 

 ferruginous spots parallel to hind-margin ; at extremities of 

 nervules, a row of ferruginous spots along hind-margin. 



I once saw this beautiful Butterfly at Knysna, on the llth of March, 

 1859, flying rapidly over the marshes near the river. I chased it for some 

 time, but, when close upon it, by an unlucky fall gave the insect time for 

 so long a start, that it was useless to try further pursuit. An aged speci- 

 men of the female, from the same locality was given me by a lady who took 

 it there some years ago. The insect is conspicuous in flight, owing to its 



