108 MR. E. J. GODFREY ON 



the villages themselves there is a good deal of deciduous scrub 

 forest of more or less recent growth, covering ground which at 

 some former period was under cultivation. 

 y. In NoiiTHf:K\ Siam : The Me Song forest. 



This forest is situated some 26 miles due north of Prae, and is 

 watered by the Me Song and its tributaries tho Me Lem, the 

 Me Tan, and the Me Sai Song. A great deal of the forest is 

 evergreen, but there is also pure bamboo jungle, mixed tree 

 jungle and " paa " or laterite jungle. 

 VI. Ix Peninsular Siam : The Singgora district. 



The geogi'aphical divisions used are those proposed by Mr. C. 

 Boden Kloss in this Journal (Vol. 1, p. 250). 

 I am indebted to the Authorities of the British Museum for free 

 access in 1913 to the collections and librai-y contained in the 

 Natural History Museum at South Kensington. 

 I have also to thank Herr Fruhstorfer for going through my 

 collection with me at the South Kensington Museum in 191 3, and for 

 sending me notes on various Siamese butterflies unknown to me at that 

 time. 



But above all, my warmest acknowledgments are due to Mr. 

 N. D. Riley for the generous help he has accorded me in the identifica- 

 tion of doubtful species and in the description of some new forms. 



In nomenclature I have followed Seitz as far as possible, and in 

 many of my notes I have quoted from the same authority. 



FA MIL r— PA PILIONID^'E. 



1. Papilio ^acus .eacus Fldr. 



Widely distributed and fairly common. It frequents gardens 

 in Bangkok, visiting }}y preference the flowers of Ixoras, It also seems 

 partial to the flowers of the Flame-of-the-forest (roiiiciana reijia). At 

 Sriracha, I once saw a whole row of these trees swarming with the 

 males and females of ccccns. The trees were in full bloom at the time, 

 and the combined effect of the masses of vivid scarlet blossoms, with 

 the numerous conspicuous butterflies hovering over them was distinctly 

 jileasing. 



P. ceacus is known to the Siamese as " pee siia yak " which 



JOURN. NAT. UIST. SOC. SIAM. 



