( 581 ) 



<S. Yellow baiid pale ; the small spots standing in front of npper angle of 

 cell of forewing rednced, being often absent. Length of streak in snbcostaj fork 

 as variable as in the other forms ; apex of cell of hindwiug sometimes black. We 

 have a curious S (Sapncay, Paraguay) bearing patches of the colour of the ? ; the 

 left clasper of this specimen is somewhat reduced. 



?. Monochromatic, the only form corresponding to P. a. androffeus ?-f. 

 androgens. Forewing : yellow patch R' — M' much larger than patch R- — R^, the 

 latter being rednced distally ; often a small patch M' — M^ present, standing behind 



the distal portion of patch R^ — MK Hindwing : greenish blue scaling forming 



a band of patches which stands always separate from cell. 



Hub. Brazil ; Paraguay. 



In the Tring Museum 48 cj(?, 14 ? ?, from: Sapncay, Paraguay, Se])tember 

 to February (W. Foster) ; Yhu, Paraguay, September to December IS'JO (Aiideer) ; 

 Castro, Parana (E. D. Jones) ; Bahuru, S. Panlo (Dr. Hempel) ; Rio de Janeiro ; 

 Petropolis (Foetterle) ; Nova Fribnrgo ; Tijuca. 



VI. Glaucus Group. 



Cell of the hindwing (except P. pilumnus) enlarged, strongly asymmetrical, 

 mnch broader between SC- and M- than in any other American species. Basal 

 cellule of hindwing long. Fifth black band of forewing connected at costal margin 

 with distal marginal border, forming a kind of C filong the costal edge ; a black 

 median band on hindwiug joining posteriorly the black abdominal border, the two 

 bands forming a large V- Abdomen beneath striped with black and yellow. P. 

 pilumnus stands somewhat isolated in this group. The other five species which 

 belong here (P. glaucus, rutulus, alexiares, eunjmedon. and daunus) are very closely 

 allied with one another. If these five insects inhabited separate districts there 

 would be good reasons for treating them as subspecies of one species. But as 

 P. daunus, ewymedon and rutulus occur together, aud are known to be independent 

 of each other, each breeding true, and P. daunus and alexiares are also found 

 together (in Eastern Mexico at least, alexiares having a restricted range), these 

 Papilios are certainly quite distinct. As further the morphological differences 

 between these species are not more trenchant than those between any of these 

 insects and P. glaucus, we must consequently treat P. glaucus also as a species 

 independent of the others. That these Papilios are develoiiments from the same 

 ancestral form there can be no doubt. 



The sexual armature is of the same type in those five species — resembling to a 

 certain extent the genitalia of P. lycophron and aristodemus. The tenth tergite of 

 the (J is long, being slightly spatulate ; the sternite bears a small oblique double 

 ridge at each side. The harpe is broad, being produced ventrally at the apex into a 

 long conical pointed process ; the oblique dorso-apical edge of the harpe is more or 

 less dentate, being dorsally produced into a simple or a dentate hook which is curved 



auad. ?. The edge of vaginal orifice is proximally raised into a long jirocess 



which is more or less lanceolate ; at each side of tlie orifice there is a large 

 dentate flap and proximally of this flap two folds ; behind the orifice there is a 

 membranaceous tubercle or projection which is densely covered with minute hairs. 



The larva bears an eye spot on each side of the tliird thoracic segment snb- 

 dorsally, and a bluek transverse dorsal line on the fourth, this line not being present 

 in /'. pilumnus. 



