I have no doubt this is the Pap. Statira of Cramer; it is 

 found only in Brazil, and has been erroneously considered by 

 Godart and Latreille as a variety of C. Jitgitrthina, an Indian 

 insect, and wliich in fact is not in itself a species, being no other 

 than the female of C Alcmeone, as an attentive examination of 

 a vast number of both, collected in Java by Dr. Horsfield, en- 

 abled me to ascertain. 



The extraordinary prolongation of the last joint of the palpi, 

 and the white borderless spots beneath, which are never silvered, 

 will distinguish this species through all the variations ; in the 

 ground colour of its wings, which in no two specimens are exactly 

 alike, and one before me is nearly white ; the lesser snowy do.t 

 is sometimes very obscure, and often wanting ; but the prolon- 

 gation of the palpi is even expressed in Cramer's figure above 

 quoted. 



I have examined about a dozen specimens, mostly captured by 

 myself, and all have been females ; and I strongly suspect future 

 and more decided observations will prove C. Evadne to be the 

 other sex : it has the palpi lengthened, though in a less degree ; 

 and the articulations of the antennae in both insects will be found 

 somewhat thickened at their termination when viewed under a 

 magnifier, a peculiarity I have seen in no other species ; and 

 although I have examined near thirty specimens of C. Evadtie, 

 they have invariably proved to be males. 



The palpi in this insect will be found at variance with the 

 generic character now given ; a striking proof that in a natural 

 system no single part can be taken as an unerring criterion for 

 generic distinction, without making it eventually an artificial one. 

 The Co/ias Dit/a of Fabricius has the same formation of palpi, 

 but is a totally different insect. 



