172 



THE MALAYAN PAPILIONID3Z AS 



and P. Polydorus of the Moluccas. This fact I shall 

 recur to again, as I think it helps us to understand 

 something of the causes that may have brought about 

 the phenomenon we are considering. Neither do the 

 genera Ornithoptera and Leptocircus exhibit any traces 

 of this peculiar form. In several other families of 

 Butterflies this characteristic form reappears in a few 

 species. In the Pieridse the following species, all 

 peculiar to Celebes, exhibit it distinctly : 

 1. Pieris Eperia compared with P. Coronis (Java). 



2. Thyca Zebuda 



3. T. Rosenbergii 



4. Tachyris Hombronii ... 



5. T. Lycaste 



6. T. Zarinda 



7. T. Ithome 



8. Eronia tritsea 



9 Iphias Glaucippe, var. 



Thyca Descombesi 

 (India). 



T. Hyparete (Java). 



T. Lyncida. 



T. Lyncida. 



T. Nero (Malacca). 



T. Nephele. 



Ercnia Valeria 

 (Java). 



Iphias Glaucippe 

 (Java). 



The species of Terias, one or two Pieris, and the genus 

 Callidryas do not exhibit any perceptible change of 

 form. 



In the other families there are but few similar 

 examples. The following are all that I can find in my 

 collection : 



Cethosia ^Eole ... compared with Cethosia Biblis (Java). 

 Eurhinia megalonice Eurhinia Polynice 



(Borneo). 

 Limenitis Limire ... Limenitis Procris 



(Java). 

 Cynthia Arsinoe, var. Cynthia Arsinoe (Java, 



Sumatra, Borneo) 



