SOME UNDESCRIBED RHOPALOCERA FROM SIAM. 185 



Five males and a single female of this rare species were 

 obtained in the Me Song forest, Prae, N. Siam, in April 1918, and 

 as the female does not appear to have been recorded hitherto we give 

 below a, short description of it. It is a very close ally indeed of A. 

 camdeo Moore. 



5. Upperside, forewing. — Basal third clear pale sky-blue, 

 not tinged with lilac or purple as in the male ; outer two-thirds much 

 paler, almost white ; costa, apex broadly, and hind-margin very dark 

 brown ; a conspicuous oblong black mark at end of cell, and a very 

 distinctive subapical series of three oblong black marks, one each 

 centrally in areas 4, 5 and 6. Hindwing. — Similar to the male; 

 the outer not so much paler than the basal areas ; the costa broadly, 

 hind-margin narrowly dark brown. 



Underside, both wings. — Similar to the male, but with the 

 ground-colour paler and the dark markings rather darker and more 

 conspicuous ; the basal and median spots in forewing cell normal, not, 

 as in the aberrant male Type, partially fused together. 



B. M. Type No. Rh. 131, 2, Me Song forest, Prae, N. Siam, 

 April 1918. 



19. Arliopala andamanica ignara, ssp. no v. 

 (Plate VI, fig. 6.) 



S. Upperside. — Differs only from A. a, andamanica Wood- 

 Mason and de Niceville, in having a very much narrower black 

 margin to the forewing. Underside, — Ground-colour a much warmer 

 reddish-brown, the transverse bands more conspicuous, smoky pur- 

 plish ; the four spots of basal row, the lower three of median row and 

 the linear mark across end of cell, faint but visible, smoky purplish. 



Length of forewing. — 20 mm. 



B. M. Type No. Rh. 132, d, Me Song Forest, Prae, N. Siam, 

 April 1918. 



A short series of this continental form of A. andamanica was 

 obtained in the same locality as our Type. There are in addition in 

 the British Museum two specimens, one from Tenasserim (Watson 

 Coll.), the other from Toungoo (Godman & Salvin Coll.). The differ- 

 ences are constant for the nine specimens examined. A. fulla 



VOL. IV, NO. 3, 1921. 



