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



4. Tachyris zarinda. 



<$ . Pieris zarinda, Boisduval, Sp. Ge"n. L6p. i. p. 486, pi. xviii. fig. 4 



(1865). 

 $. Pieris fatima, Vollenhoven, Tijd. voor Ent. 1866, p. 59, pi. ii. 



figs. 1, 2. 

 $ . Tachyris phestus, Westwood, Trans. Ent. Soc. 1888, p. 469, pi. xii. 



fig. 2. 



Celebes. B. M. 



The female sometimes has orange and sometimes white 

 markings, but whether seasonally or not there is no evidence 

 to show. 



5. Tachyris bouruensis. 



2 . Tachyris bouruensis, Wallace, Trans. Ent. Soc. ser. 3, vol. iv. p. 379 

 (1867). 



Bourou. 



Allied to T. zarinda. The type should be in Hewitson's 

 collection, but was probably not in good enough condition to 

 induce him to retain it. 



6. Tachyris nebo. 



Appias nebo, Grose-Smith and Kirby, Rhop. Exot., Pier., Appias, i. 

 figs. 1, 2 (1894). 



Burma. 



Nearest to T. galba ; much more yellow and without discal 

 band on primaries. 



7. Tachyris galba. 



Tachyris galba, Wallace, Trans. Ent. Soc. ser. 3, vol. iv. p. 378 (1867). 

 Manipur and Silhet. B. M. 



8. Tachyris nero. 



Papilio nero, Fabricius, Ent Syst. iii. 1, p. 153 (1793) ; Donovan, 



Ins. Ind. pi. xxxii. fig. 1 (1800). 

 Pieris thyria, Godart, Enc. Me"th. ix. p. 147 (1819) ; Lucas, Lep. Exot. 



pi. xxv. fig. 3 (1835). 

 Pieris Jiff ulina, Butler, Ann. & Mag. Nat. Hist. ser. 3, vol. xx. p. 399, 



pi. viii. fig. 1 (1867). 



Burma, Malacca, Penang, Singapore, Java, Sumatra, 

 Borneo. B. M. 



This species varies a good deal both in depth of colour 

 above and below and in dusky veining and clouding. T. thyria 

 and T. figulina are both separable as varieties, but whether 

 they are seasonal forms or mere sports remains to be dis- 

 covered. 



