( 637 ) 



side of Ecnador. If Standinger's Cbiriqui example is not authentic, the viiriciiis 

 forms of P. cleotas and of P. aristeus represent each other geograjihically and 

 should accordingly all be regarded as forms of one species. This would be a rational 

 systematic treatment of the insects, considering that the distinguishing characters 

 are individually variable, that some forms differ constantly and others do not, that 

 some differ only in pattern or colour, others in structure, and others again in 

 strncture and pattern. The geographical distribution of the forms of P. cleotas 

 (Costa Rica, Panama, Colombia, Venezuela, and S.E. Brazil), and of P. arist'us 

 (Ecuador to Bolivia, Upper Amazons, Guiana, S.E. Brazil ; and " Bogota," 

 " Chiriqui," as mentioned above), renders it highly probable that we have here to do 

 with one species only, the occurrence of P. aristeus bit/as in " Chiriqui and Bogota," 

 tcing accidental or the records being erroneous. This conclusion is corroborated by 

 the fact that the Brazilian form of P. cleotas agrees in structure better with the 

 Andesian forms of P. aristeus than with the nortliern forms of P. cleotas. 

 However, as we may hope to get soon further evidence of the actual distribution 

 of these insects, we deem it sufHcient for the present to have drawn attention to 

 P. cleotas and P. aristeus being only doubtfully distinct from one another. 



(J. Costal margin of forewing serrate ; a submarginal row of spots nearly 

 parallel to distal margin, curving costad in front ; a discal row of large spots 

 from lower angle of cell to hindmargin, oblique or curved, approaching the 

 submarginal row posteriorly ; the two rows very strongly diverging anteriorly, 

 there being usually a row of olivaceous buff or greyish blue blotches between 

 them ; cell-patch large, small, or absent ; often some spots distally of cross- 

 veins. Hindwing : tail acnte or absent ; a creamy discal band of variable 



width ; a submarginal row of spots. 



Underside always with a patch iu cell of forewing ; hindwing always with a 



discal band of spots, these spots red, proximally more or less creamy, sometimes 



more extended creamy than red, last spot always creamy yellow, often also the first. 



? . Dimorphic ; one form resembling the male, the other having the markings 



of the upperside more or less bluish or olive-buff. 



Genitalia : S. Tenth tergite long, spatulate ; sternite geograjihically and 

 individually variable, the usual double ridge on each side, the first projection 

 being usually pointed and often dentate, the second tooth more obtuse, bearing 

 often on anal side a tooth ; at apex of sternite mesially several teeth one behind 

 the other, or one tooth, or a tooth right and left, or no teeth. Harpe long, of nearly 

 even width, slightly curved, apical portion geographically and individually variable, 

 mostly produced into a fork, fishtail-shaped, often the dorsal prong reduced and the 

 ventral one curved upwards, sometimes three processes, in most forms a number of 



teeth in between the prongs and proximally of them. ? . Similar to the armature 



of P. victorinus ; lateral process dentate ; proximal flap variable, dentate or simple, 

 long or short. 



Early stages not known. 



Mab. Costa Rica; Panama; Colombia; North Venezuela; South-East Brazil. 



a. P. cleotas arclnjtas Ilopff. (1806). 



Papilio archylns HopSer, Sleti. Enl. Zeit. xxvii. p. 2S. n. (ISGl".) ((J, Central America); Kirby, 



Cat. Diurn. Lep. p. .'i67. n. 330 (1871) (Amer. contr.). 

 Papilio laetitia Butler, Cist. Eni. i. p. 84 (187^) (Costa Rica) ; Kirby, Cut. Dium. Lep. p. 813< 



n. 370 (1877); Staud., Exot. Tag/, p. 15. t. 10. (J (1884) (Costa Rica ; Chiriqui, 2U00— 2o00 m,, 



$ similar to (J). 



