392 Dr. A. G. Butler on the Pien'ne Butterflies 



XLIV. — On the Pierinc Butterflies of the Genics Catophaga. 

 By Arthur G. Butler, Ph.D.,' F.L.S., F.Z.S., &c. 



When Wallace described his extensive genus Tachyris, 

 based chiefly upon the tuft at the base of the claspers in the 

 males, he seems to have been unaware that Hubner had 

 already proposed three generic names, viz. u\ppias, Catophaga, 

 and Hiposcritia (recte Ilyposcritia) for species having this 

 secondary sexual character. 



I find that Appias (type A. zelmira) is undoubtedly gene- 

 rieally distinct, the club of the antennae being broadly spoon- 

 shaped and flattened ; but I see no reason for regarding 

 ( 'atophaga, Ilipoacritia, and Tachyris (restricted) as more 

 than groups of one genus, differing chiefly in outline of wing 

 and style of coloration. In the case of Saletara the structural 

 difference in neuration is inconstant, and consequently only 

 of subgeneric value ; I therefore regard this also as a group, 

 though perhaps a little better defined than the others. 



Group 1. IIYPOSCRITIA, Hiibn. 



The species of this group have the apex of the primaries 

 usually more or less falcate; the males of the wet-season 

 phase are either cream-coloured or ochraceous on the under 

 surface of the secondaries, rarely (perhaps never) heavily 

 speckled or striated ; whereas the dry-season phase of the 

 male more or less resembles a dead leaf in tint on the under 

 surface. 



Type of the group II. pandione. 



1. Ilyposcritia indra. 



Pieris indra, Moore, Cat. Lep. E. T. C. i. p. 74 (1857) ; P. Z. S. 1857, 



p. 103, pi. xliv. fig. 5. 

 Appias mahana, Moore, Ann. & Mag. Nat. Hist. ser. 4, vol. xx. 



p. 48 (1877). 

 Ap2)ias i7nbecilis, Moore, Journ. As. Soe. Beng. liii. p. 46 (1884). 

 Tachyris mdigis, Wevmer, Stett. ent. Zeit. 1886, pi. i. fig. 3, 1887, 



p. 11. 



N.E. India and Burma. ? , type, B. M. 



We have one male labelled " Celebes," but I believe this 

 to be an error; it was received from the Godman and Salvin 

 collection (ex coll. Druce). H. indra is the wet-season 

 phase, H. mahona dry, H. imhecilis = indigis an extreme 

 dry phase. 



