2J2 LLOYDS NATURAL HISTORY. 



the pectus is spotted with red. The female is black, with a 

 large white spot, divided by the nervures, in the middle of the 

 fore-wings, and a row of bright crimson sub-marginal spots on 

 the hind-wings. 



[VIIL] Ithobalus, Hiibner. This is another genus peculiar 

 to America, but very unlike the foregoing. The species much 

 resemble each other ; the type is /. polydamas (Linn.), which 

 is common throughout the warmer parts of America. The 

 fore-wings are broad with the costa arched, the tip produced, 

 but rounded off, and the hind margin very oblique, The hind- 

 wings are ample, rounded, and strongly dentated, but not 

 tailed. The colour is a greenish-black, with pale yellow 

 incisions ; and a row of greenish-yellow spots, smallest towards 

 the tip of the fore-wings, runs parallel with the hind-margin of 

 the fore-wings, and curves across the disc of the hind wings. 

 On the under-side there are some larger yellow sub-marginal 

 spots on the lower half of the fore-wings, and a row of sub- 

 marginal red lunules on the hind- wings ; the pectus and 

 abdomen are also marked with red. The larva is stout, slug- 

 shaped, of a dirty yellow, with long, pointed, fleshy spines of a 

 pale pink ; it feeds on Aristolochia. The pupa is green, 

 with a long, conical protuberance on the back of the thorax. 



[xiv.] Eury tides, Hiibner. The type of this genus, E. 

 dolicaon (Cramer), is a fine South American Butterfly, nearly 

 four inches in expanse. The fore-wings are creamy-white, 

 with broad black borders, with an oblique row of creamy 

 spots towards the apex of the fore-wings, and a double sub- 

 marginal row of spots on the hind-wings. The fore-wings are 

 broad, with the hind-margin concave below the tip, and a 

 broad black band at the base of the costa, and then curving 

 across the middle of the cell ; the hind-wings are furnished 

 with a long slender tail on the upper median nervule. 



[xix. B.] Cosmodesmus^ Haase. We may, perhaps, restrict 



