360 Mr. A. R. Wallace on 



through ; a narrow black border on the costal, outer, and hind 

 margins ; near the apex of the u})per wings are four or five white 

 spots, formed by a dusky transverse band from the outer margin, 

 which does not reach the costa, and is crossed by black nervures ; 

 base of the wings dusky. Beneath : upper wings uniform black, 

 with an apical band of five white spots; lower wings rich chrome- 

 yellow, paler on the upper margin, with a rather broad black 

 border, in which is a marginal row of white spots tinged with yel- 

 low. 



Expanse of wings 2| inches. 



Hab.—Ara Islands (Coll. Wall.). 



A species which connects the preceding with T. dorimene, which 

 has hitherto appeared completely isolated. 



51. Thyca dorimene, Cramer. 



Papilio dorimene, Cr. 387 C, D. Pieris durimencj Bd. Sp. Gen. 

 p. '161- ; Voll. Mon. Pier. p. IG. 

 Hah.— Cexam, Amboina (Coll. Wall., B. M.). 



This pretty species is not uncommon in the forests of these 

 islands. 



52. Tlvjca dorylcea, Felder. 

 Pieris dorylcea, Fcld. Voy. Novara, p. 182, ? . 

 Hah.—Kxvi Islands (Coll. Felder). 



A distinct form, allied to T. dorimene. Dr. Felder obtained it 

 in an old Dutcli collection. The locality may therefore be 

 erroneous, though it is a probable one. 



e. Nysa group. 



53. Thyca momea, Boisduval. 

 Pieris momea, Bd. Sp. Gen. p. 477 ; Voll. Mon. Pier. p. 31. 



Hab.—Java (Coll. Wall., B. M.). 



54. Thyca nysa, Fabricius. 

 Papilio nysa, Fab. Ent. Syst. III. i. p. 195. Pieris nysa, Bd. 

 Sp. Gen. p. 476, ^,2. 

 S'ai.— Australia (Coll. Wall., B. M.). 



