395 Dr. A. G. Butler on the Pierine Butterflies 



14. Hyposcritia lalassis. 



Appias lalassis, Grose-Smith, Ann. & Mag. Nat. Hist. ser. 5. vol. xx. 

 P. 265 (1887) ; Rhop. Exot. i., Pier. pi. ii. figs. 1-3 (1889). 



East Pegu and Burma. 2 $, B. M. 



Group 2. CATOPHAGA, Hubn. 



In this, the typical group, the primaries show little 

 tendency to falcation at apex, the sexes are usually very 

 dissimilar, and the colouring of secondaries below varies 

 seasonally from ochraceous or yellow to pearl whitish. 



1. Catophaga eg a. 



Pieris ega, Boisduval, Sp. G<n. I,e> i. p. 536 (1836). 



Pieris melania, var. caledonica, Felder. Verh. zool.-bot. Ges. Wien. xii. 



p. 495 (1862). 

 Pieris psyche, Felder, Reise der Nov., Lep. ii. p. 166 (1865). 



Australia to New Caledonia arid the Loyalty group. B. M. 



This species apparently varies but little, all the specimens 

 which I have seen showing a wet-season character. There 

 are forty-two examples in the Museum series. 



2. Catophaga agave. 



Pieris agave, Felder, Wien. ent. Monatschr. vi. p. 286 (1862). 

 Tachyns alope, Wallace, Trans. Ent. Soc. ser. 3, vol. iv. p. 372 



(1867). 



Tachyris mata (?), Kheil, Lep. Ins. Nias, p. 34, pi. iv. fig. 21 (1884). 

 Tachyris agatha, Staudinger, Iris, 1889, p. 20. 



Malacca, Java (Nias ?), Borneo, Philippines. B. M. 



Kheil's illustration agrees well with one of our male 

 examples ; but in his description he calls the upper-surface 

 coloration hoary greyish, and he states that it belongs to the 

 T. celestina group, in which (as is well known) the upper 

 surface is pale chalky bluish. The figure, being a photo- 

 graph, distinctly proves that " T. mata " is not a Tachyns , 

 but a male Catophaga, and therefore that it is not nearly 

 related to T. celestina, the dusky spot on the primaries being 

 placed between veins 3 and 4, not between 4 and 5 ; and my 

 opinion is that it is merely a feebly marked (perhaps dry- 

 season) discoloured male of C. agave. I believe Staudinger's 

 Tachyris agatha to be a variety of the female. The Tachyris 

 fnaculata of Grose-Smith (compared with C. agave) appears 

 to me to be closely related to Huphina acrisaj Boisd, 



