1898.] L. de Niceville— List of the Butterflies of the Ke Isles. 2 73 



93. Appias clavis, Wallace. 



Rober as Tachyris ada, Cramer, from Key. Originally described 

 from Ke Island. It is rather rare on Little Ke, not so rare on Great 

 Ke Island. 



94. Appias albina, Boisduval. 



Decidedly rare on Little and Great Ke Isles. The Form I of the 

 female, ground-colour white on both surfaces, appears to be the only 

 one found. 



95. Huphina rachel, Boisduval. 



Rober as Pieris pitys, Godart, from Key. "Pieris" rachel was ori- 

 ginally described from Java, but we have seen no specimens from 

 thence. Our examples agree very well with the description, except 

 that the small yellow spot at the external angle (apex) of the hindwing 

 on the underside is often absent, and when present almost obsolete. 

 " Pieris " pitys, Godart, is also a closely allied species, described from 

 Java, also never seen by us, which is said to have four or five white 

 spots arranged transversely in addition to the apical white spot on the 

 upperside of the forewing, whilst our species has one or at most two 

 subapical white spots only. P. pitys is figured by Lucas from Java, but 

 he does not shew the four or five white spots mentioned above, and in 

 other respects his figure does not agree with our specimens from the Ke 

 Isles. Perhaps " Pieris " perictione, Felder, described from the Arru 

 Islands, is nearest to our species, but it has never been figured, and a 

 description alone is inadequate to enable one to discriminate between 

 very closely allied species, though the description agrees very well 

 with our specimens. H. rachel is very common throughout the year 

 on all the islands. 



Subfamily Papilioninj:. 



96. Troides priamus poseidon, Doubleday. 



Rober as Ornithoptera priamus, Linnaeus. The Hon. Walter 

 Rothschild in " A Revision of the Papilios of the Eastern Hemisphere, 

 exclusive of Africa," Nov. Zool., vol. ii, p. 191 (1895) records this 

 species as T. priamus poseidon, Doubleday, (k 2 ) : 9 — ab. hecuba, Rober 

 (Tijd. voor Ent., vol. xxiv, p. 263 ( 9 , nee (?) (1891), from the Key 

 Islands. On Little Ke, Great Ke and Koer (Kiihn got none from 

 Tiandoe) this butterfly is always to be seen on the wing, but is never 

 abundant. The larva feeds on a species of Aristolochia. 



