382 Mr. A. R. Wallace on 



with groups of dusky atoms disposed in irregular macular bands, 

 and a black disco-cellular spot. 



Expanse of wings 1^ inch. 



iya6.-N. India (Coil. Wall., B. M.). 



Pieris colimha, Bd., quoted by Moore, appears to be a MS. 

 name, and should be altogether dropped. 



52. Tachyris plicebe, Felder. 



Pieris p/ioebe, Feld. Wien. Ent. Monats. v. p. 299 ; Voy. Novara, 



tab. XXV. f. 5, $ . 

 Sab. — Luzon, Philippine Islands (B. M.). 

 This species comes nearest to T. indra. 



53. Tnchyris zamora, Felder. 

 Pieris zamora, Feld. Wien. Ent. Monats. vi. p. 28G, $ . 

 Hab. — Mindoro, Philippine Islands (Coll, Semper). 

 Dr. Felder considers this only a local modification of T. plicehe. 



54. Tachyris lalage, Doubleday. 



Pieris lalage, Doubl. Gen. of Diur. Lep. pi. 6, f. 3, $ . 

 P. dtirvasa, Moore, Proc. Zool. Soc. 1857, p. 103, pi. 44, f, G 



(err. 4),^. 

 Hab.—'^. India (Coll. Moore, B. M.). 



The finest species of this group ; common in collections from 

 Darjeeling. 



e. Polisma group. 



55. Tachyris polisma, Hewitson. 



Pieris polisma, Hew. Ex. Butt. vol. ii. Pieris VI. f. 38, ^ ; vol. iii. 

 Pieris VIII. f. 55, ? ; Voll. Tijds. v. Ent. 18G6, pi. 1, f. 3, 4, $ . 

 Hab. — Macassar (Wall.); N. Celebes. (Voll.). 

 This curious little butterfly differs from every other species of 

 Pieridce in the shortness of its discoidal cells. It agrees, however, 

 with T, pandiofie and allies, in having the tuft of bristles at the 

 base of the anal valves of the male very well developed. 



56. Tachyris illana, Felder. 

 Pieris illana, Feld. Wien. Ent. Monats. vi. p. 287, $ . 

 P. CBgis, Feld. lib. cit. v. p. 299 ; Voy. Novara, pi. xxiv. f. 1, $. 

 //fli.— Mindanao, Philippines (Coll. Wall.). 



