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SECTION I.— ARISTOLOCHIASWALLOWTAILS. 



Tlie following gonoric or siibgotieric names have American species as types : 



Parides Hiibner (1818 ?) ; type echelus. 



Ttliolialus Hiibuer (1818 ?) ; type jioli/damas. 



F.iulopofioii Lacordaire (1833); type si'.watn's. 



Blahea (Jrote (1875) ; type columhxs (= giiinllricliiaintfi). 

 Lacordaire (^Ann. Soc. Ent. France ii. p. 384) gives Esclis(-holtz as autlior of tlie 

 name EmlojiO(/on. We do not know when and where Eschscholtz proposed the name. 

 The American Aristoloehia-Swallowtails fall into two very distinct subsections. 



Subsection A.* 

 Antenna long ; club slender ; sensory grooves more or less large, sharply 

 defined ; end segment conical, almost as long as it is liroad. Claws asymmetrical. 

 Markings of body red. Hindwing usnally witli red band or row of red spots on disc, 

 these markings seldom white or yellowish white. Forevving of ? bearing often white 

 or 3'ellowish white patches on disc and in cell, being sometimes all black. Snbbasal 

 cellule long, widening distally ; PC curved near its base. Cross-veins of forowing 

 oblique ; upper angle of cell obtuse. Cell of hindwing more or less acuminate, D' 

 more or less leaning basad anteriorly, the cell-angle D^ — D' being smaller than the 

 angle D^ — D^, or vein D^ reduced to a point, rarely transverse, never leaning distad. 

 (?. Scent-organ woolly or densely scaled, no naked streak at its discal side. 

 Tentli abdominal sternite not reaching to the ape.x of the long and slender tergite. 

 Tibiae often incrassate and hairy. 



? . Anal segment with numerous hairs and bristles which are mostly tapering 



to a fine point, others ending abruptly, being somewhat thicker at the tip than at 



the base ; in many species there are some bristles whicli are distinctly club-shaped. 



The American species which come here can be conveniently placed into three 



groups. 



Key to the groups : 



Fringe-spots white. Hindwing with submarginal spots and 

 usnally also diseal spots or dots, or a discal band ; 



mostly with tail Ascanius Gronp. 



Fringe-spots white. Palpus black or red. Hindwing with 

 discal band or row of spots, but without submarginal 



spots Aeneas Group. 



Fringe-spots red. Palpus always black. Hindwing marked 



as before ......... Lysamler Group. 



I. Ascanius Group. 



In the preservation of a row of submarginal spots on the hindwing tliis gronp 

 is more ancestral than the other American Aristolochia-Swallowtails. The forewing 

 of some species, especially c'ohtmbm, shows also ancestral characters in pattern. The 

 tail of the hindwing is a third generalised peculiarity, whicii is more strongly and 

 more generally developed in this grouj) than in the other two groups of red- 

 spotted species. 



Key to the species : 



II. Forewing with green-bine band on forewing . . . Species No. 1. 

 Forewing with white band on forewing ... b. 



* Hubscction B. fallows after Species No. 45. 



