l-AIMIIDMNAK: 'llIK CKNl'S ll'IIK l.II'KS. 1255 



and rounded excision between tlicni, tlio luiid iinil tlmriix iis fur n?* the tm.iftl wing 

 tubercle widen witli ii };riulnal luul rejjular curve, beyond wliicli tlie body broadens 

 still to a very sii^lit decree n» far us tlie end of tlic third alnloniinal !ic(;nient, and tlien, 

 almost as gnuluniiy. dindidshes to the narrow truncate tip. The oceilar tut)ercles are 

 small, triijuetral, slislitly compressed, tlie narrowest face inferior, tlie superior riilge 

 carinate. The inesonotni tul)ercle is larger, rather prominent, tri<inetrai. the narrowest 

 face posterior, all tlie rid;;es carinate ; the basal wing tnberrle is compressed and carinate 

 in a direction sulipnrallel to tin- lateral carinae of the niesoiiotal tubercle. These lateral 

 carinae continue as distinct carinae to tlie extreme base of the Inferior wing-cases, the 

 narrow belt of which they then traverse witli almost eiiual distinctness to the extremity 

 of tlie third abdominal segment, then bend in their course and run straiglit to the lower 

 lateral angles of the creniaster; in this latter portion of their course they are less dis- 

 tinct than in the other and sometimes subobsoletc. The anterior carina of the nieso- 

 notal tubercle also extends as a distinct carina as far as the liead, and there is a dorsal 

 carina over the remainder of the thorax, obsolete on the metathorax. .\11 these carinae 

 are distinct and sharp, and a similar distinct and siiarp carina is found over the entire 

 abdomen running with a broad arcnation from the upper lateral angles of the cremaster 

 to the metathorax ; liere and at the posterior extremity they are laterodorsal, but upon 

 the middle of tlie abdomen they are supralateral and they cross the metathorax so 

 obliquely as to be subdorsal at its anterior edge. Fainter and lower carinae are also 

 found running from the basal wing tubercle over the wing, marking tlie course of tiie 

 median nervure, and above connecting the same tubercle w ith the anterior base of the 

 mesonotal tubercle. There is a series of oblique and sometimes arcuate carinae on 

 the sides of the second to seventh abdominal segments, midway between the carinae 

 already mentioned and the spiracles, running on each segment from above backward 

 and downward. The anterior margins of the same abdominal segments are also cari- 

 nate to a greater or less degree, marking on the movable segments the limit to wliich 

 the segment can be closed, and there is on all abdominal segments just before the pos- 

 terior border, most distinct upon those bearing spiracles, a thread-like carina. Cre- 

 master tetraquetral, depressed, tapering, all the four ridges carinate. The booklets 

 occupy only the apical field, the stalk slender, cylindrical, straight only on the basal 

 half, beyond strongly curved, enlarging, gradually at first, apically into a transverse, 

 appressetl, recurved Mange three times as wide as the stalk, and at the apically recurved 

 angles triangularly produced. Spiracles oblong obovate. crateriform, the edges dis- 

 tinct and carinate ; the prothoracic spiracle semilunar, of varying height. Surface of 

 body delicately corrugate and more minutely punctate with greater or less distinctness. 

 Tongue case reaching exactly the end of the superior wings ; the antennae falling just 

 short of this. 



This genus of swallow-tails is verj' numerous in species and has its 

 home in tropical America. Two species, however, are known from 

 Europe and western Asia between the 30th and 55th parallels. In 

 America it is very abundant in the Antilles, Central America and the 

 northern coast of South America byt has not been found south of the 

 tropics, while in North America, at Ica.st in the eastern half of the conti- 

 nent, one species readies 40° X. Lat. and has lieen found on the confines 

 of New England. 



The butterflies are very elegant in fonn ; they are among the smallest 

 of swallow-tails and merit that appellation more than others, each hind 

 wing being provided witii a single apjieiidage, often of excessive length. 

 Their wings are yellow or greenish yellow but often more than half black, 

 being heavily bordered and profusely barred witii transverse, tapering 



