Eastern Pieridce. 371 



20. Tuchyrls galat/iea, Felder. 



Pleiis galaihca, Feld. Verb. z.-b. Ges. Wien. 1862, p. 485 ; 



Voy. Novara, p. 165. 



Sab. — Nicobar Islands. 



This appears hardly different from T. pauUna {T. fl/6ma and 

 T. his). 



21. Tachyris ega, Boisduval. 



Pieris ega, Bd. Sp. Gen. p, 536, $; Guer. Voy. Favorite, 



pi. ii. f. 2, ^. 

 P. melania, Bd. Sp. Gen. p. 5?j7 (nee Fab.), $. 



Ifrt6.— Australia (Coll. Wall., B. M.), New Caledonia (B. M.). 



Specimens from Moreton Bay have the under side of the lower 

 wings of the female richly bordered with orange both on the 

 upper and anal margins. A female from New Caledonia in the 

 British Museum is small, and on the under side has the uppers 

 yellowat the base, and the disc of the lower wings uniform rich ochre- 

 yellow. Two others from Australia have the disc of the lower 

 wings beneath white, narrowly edged with orange. A small male 

 from Lord Howe's Island, in the British Museum, has the wings 

 more acute and only one spot on the uppers. This is decidedly 

 not the Papilio melanin of Fabricius, which has not yet been 

 properly identified, and probably never will be.* It is there- 

 fore better to omit it altogether, since we most likely possess the 

 same insect under some other name. 



22. Tachyris ttrania, n. sp. 



Male. — Above, white ; base of uppers and costa to the middle 

 gray, thence with a black border to near the outer angle, broader 

 at the apex and extending in points along the radial and median 

 nervules ; an indistinct black line connects these points across the 

 apex, and a sublunate spot between the second and third median 

 nervules ; lower wings entirely white. Beneath : upper wings 

 white, their apex and the lower wings pale lemon-yellow ; the 

 costa, the extreme apex, and the transverse line faintly dusky ; 

 the sublunate spot as above, but connected to a smaller indistinct 

 spot at the extremity of the second median nervule ; lower wings 



* Fabricius says, " alis posticis subtus obscure glaucis," and Godart, " le 

 dessous des ailes inferieures est d'un vert-blanchatre obscur." This is there- 

 fore evidently not the P. melania of Boisduval (tlie $ of his P. ega), wbich 

 lias the lower wings beneath jialc yellow and rich orange. 



