354 Mr. A. R. Wallace on 



* ** Beneath with nerviires not black or dilated, submars[inal 

 posterior band red and white, or white. 



SO. Thyca argenthona, Fabvicius. 

 Painlio argenthona, Fabr, Ent. Syst. III. i. p. 200, $. 

 Pleris protochirhy Bd. Sp. Gen. p. 457, $. 

 Male, — Above_, like the female, but white instead of yellow, 

 the apical and posterior bands narrower, margined within with an 

 ashy tint. Beneath the same difference of tint and markings. 

 Ha6.— Australia (Coll. Wall., B. M.). 



31. Thyca 2^eribcsa, Godart. 



P'lcris per'ihcea, Godt. Enc. Meth. ix. p. 151 ; Bd. Sp. Gen. 



p. 453 ; Voll. Mon. Pier. p. 8. 

 ' Hah. — Java (Leyden Mus.). 



This species has its aflinity with T. argenthona^ rather than 

 near Prioneris 'phllonomc, where Boisduval places it, or near 

 2'. hyparele, according to Vollenhoven. The absence of black on 

 the veins beneath and the white-bordered red spots indicate this. 



32. Thyca themis, Hewitson. 



Pieris themis, Hew. Ex. Butt. vol. ii. Pieris V. f. 31, 32, $ . 



Female. — Has the. base dusky, the apical half of the uppers 

 and a broad margin on the hind wings black, enclosing a few 

 faint yellowish spots ; the disc of the hind wings is pale yellow. 

 Beneath, nearly as in the male, but with the black apex and 

 hind margin rather wider, and the disc of the hind wings deeper 

 yellow. 



i/«6.-^Philippine Islands (Coll. Hewitson). 



On the whole, I consider this species nearest to argenthona, 

 with which it agrees in having the veins not black-bordered 

 beneath, and a somewhat similar distribution of black and yellow 

 on a white ground, the posterior band of spots being white instead 

 of red. 



* * * * White with a black border in both sexes, nervures not 

 black and dilated beneath, posterior band yellow or white. 



S3. Thyca gah'ia, Boisduval. 

 Pieris gabia, Bd. Sp. Gen. p. 478, $; Voll. Mon. Pier. 



p. 38, $. 

 £Jab. — Waigiou (Voy. Coquille) ; New Guinea (Voll.). 



