DANAIDA. 85 



All have the costal and subcostal nervures of the anterior wing rather widely separated ; sometimes the first nervure 

 of the latter anastomoses with the former. 



The LAEViE, as far as known, have long, flexible, but not retractile tentacula on the anterior and on the penultimate 

 segments. 



The PuPiE are suspended, smooth, more or less ovate, often very beautifully coloured and gilded. 



Of the species which compose the family nearly all belong to the Old World, especially to the islands of the Indian 

 Archipelago and the Pacific Ocean. Danais, under one of its forms, occurs in the New World from Canada to the 

 extreme south of Brazil, and perhaps still further south. No species of Euploca or Ilestia has yet been found 

 there. 



Euploea and Danais were considered by Fabricius and Latreillc to constitute but one genus, to which the former 

 gave the name of Euploea, the latter, originally, that of Danaida, which he afterwards changed to Danaus, and then, 

 in the Encyclopedic Methodique, to Danais. In Mr. MacLeay's Appendix to King's Survey of Australia, he 

 proposes to limit the name Danais to those species which " have no pouches to the lower wings of the males ; " by 

 which he appears to mean those which I include in the genus Euplasa. Dr. Boisduval has, on the contrary, retained 

 the name Danais for those species of which the males have a pouch, or a spot of peculiar structure on the posterior 

 wings. Latreillc proposed his genus Danaida in 1805, with Danais Plcxippus for the type, two years before the 

 publication of the outline of the Systema Glossatorum of Fabricius, in Illiger's Magazine. I have, therefore 

 followed Dr. Boisduval in retaining Latrcillc's name for the species, congeneric with his type, and that of Fabricius for 

 the remaining species of the genus. 



June, 1847- A A 



