Are Uvercs argiades and corctas distinct sjyecies ? 373 



evidence to the contrary, I believe the differences in the 

 appendages to be rather beyond mere geographical varia- 

 tion. As regards iKcrrhasiiLS and dipora, I am not prepared 

 to give any fully considered opinion. My material and 

 information are much too scanty. The original descriptions 

 of parrhasiits and certainly of dipora are more applicable 

 to argiades than to the species I choose to call ijarrhasius, 

 and if this be not parrhasius then it is unnamed. It is an 

 Indo-Malayan tropical form, argiades being essentially 

 palsearctic. I have seen specimens both of argiades and 

 paro'hasius (as I accept it) under the names of 2^tt7Thasi2is 

 and di2Jora. I have not seen the type specimens of these 

 forms. At present I am merely dealing with argiades 

 (and corefas) and with iKirrhasius only as bearing on 

 argiades. 



Parrhasiits, vaguely defined as ranging from India to 

 Australia, and in its Indian races sunk under argiades by 

 many authorities, has appendages, that, when we note the 

 great similarity of those of argiades, coretas, amyntula, and 

 minimus, may be called exceedingly different. 



The distinction in wing-markings that is most constant 

 between argiades and parrhasius is that the spots beneath 

 are black in argiades, but nearly of the ground colour in 

 parrliasius, being marked off by the paler circles round 

 them. 



Argiades appears to occur in only the northern and 

 mountainous districts in India. The differences between 

 the appendages of argiades and coretas, though slight, affect 

 several distinct parts of the structure. The clasps in coretas 

 are wider and heavier basally, the outer angle of the base 

 being full and receding somewhat and more firmly attached 

 to the basal ring. In argiades this attachment is less and 

 the angle looks much more rounded off, than in coretas. 

 The long spine of the clasp is in corctas long, slender, and 

 straight, as compared with the shorter, thicker, and more 

 curved form in argiades. The spiculation of its extremity 

 affects a rather greater length than in argiades. This form 

 of the spine makes what we may call the shoulder more 

 sloping in coretas, more square and angular in argiades. 

 The soft hair-clothed division of the clasp is more slender 

 in argiades and carries only one or two hairs at most, lower 

 than a point approximately level with the division of the 

 clasp into the two branches, below this where the two 

 clasj)s oppose each other is a considerable glabrous surface ; 



