viii TABLE OF CONTENTS. 



Paoz 



Genus Papilio 1345 



Excursus LII. The late of Suffusion in Butter/lies 1350 



Papilio polyxenes 1353 



FAMILY HESPERIDAE 1365 



Tribe Hesperidi 1373 



Genus Eudamus 1378 



EscuESUS LIII. Effect of Cold on Development 1383 



Eudamus jjroteus 1386 



Genus Epargyreus 1393 



ExcuKSUS LIV. Odd Caterpillars 1397 



Epargyreus tityrus 1399 



Genus Acbalarus 1112 



ExcuKSUS LV. Variations in Habit and in Life according to Locality and Season 



of the Year 1415 



Achalarus lycidas 1418 



Genus Tliorybes 1423 



ExcUESUS LVl. Some Singular Things about Caterpillars 1427 



Thorybes bathyllus 1432 



Thorybes pylades 1436 



Gruus Tbauaos 1445 



Excursus LVII. Nests and other Structures made by Caterpillars 1454 



Tbanaos lucilius 1458 



Tbanaos persius 14C8 



Tbanaos juvenalis 1476 



Tbanaos boratius 1486 



Tbanaos terentius 1490 



Tbanaos martialis 1493 



Tbanaos ausonius 1498 



Tbanaos brizo 1500 



Tbanaos icclus 1507 



Genus Pbolisora 1514 



Excursus LVIII. The Perils of the Egg 1518 



Pbolisora catuUus 1519 



Genus Hcsperia 1527 



Excubsus LIX. Anomalies in Oeographical Distribution 1531 



Ilesperia montivaga 1536 



Hcsperia ccntaureae 1542 



Tribe Pamphilidi 1540 



Genus Ancyloxipba 1551 



Excursus LX. A Budget of Curious Facts about Chrysalids 1554 



Ancyloxipba numitor 1558 



