THE BUTTERFLIES OF SIAM. 113 



April 1913, but have not come across it since. 



Jordan restricts the race to Siam and sa3's " only a few J 6 are 

 known ". 



35. Papilio megauus similis Lathy. 

 Common in most forest areas. 



I have one very aberrant male, taken on the Petchaburi River 

 in April 1912, in which the streaks of the forewing are almost com- 

 pletely absent. 



36. Leptocircus curius curius Fabr. 



Not common. Taken only at Muak Lek and Pak Jong. 



37. Leptocircus meges virescens Btlr. 



Fairly common in the Sriracha forest, and not uncommon in 

 other forest areas. 



FAMILY— PIER1D.E. 



38. Leptosia xiphia xiphia. Fabr. 

 Common everj'where all the year round. 



39. Delias agostina subsp. ? 



A single male which I identify as belonging to this species was 

 obtained in the Me Song forest, Pi-ae, in April 1910. 



It is probably referable to the race infwmata Fruiist. from Assam 

 and Tenasserim, which I know only from Fruhstorfer's figure. 



40. Delias htpaeete cieis Fruhst. 



Quite common everywhere. Very plentiful in temple gardens 

 in Bangkok in December, January and February. 



41. Delias belladonna Fabr. 



Recorded from Siam bj^ Bingham (Faun. Br. Ind., Butterflies. 

 Vol. II, p. 148.) Race unknown. 



42. Delias descombesi leucacantha Fruhst. 



I have met with this butterfly in all parts of Siam but nowhere 

 in great numbers. 



Fruhstorfer, however, writing of the race, saj's : — 



"The butterflies ai-e common in the whole region, flj' all the year 



round, in Siam in January in enormous numbers, and adorn even the 



parks in the large towns, such as Bangkok and Saigon with their 



bright colours and the dazzling white of the upper aide, floating slowly 



VOL. II, DEC. 1016. 



