( 516 ) 



praecostal spin-; SC" originating I'ruui roll more proxiuially than in P. lirhts and 

 P. madijcs. 



Scent-organ : a streak of minute triangular scales along the naked streak ; 

 these scales not very close together, smaller than the scales situated along 

 nlidominal edge ; striation of scales heavy. 



Genitalia : S. Harpe short, sinuate at apex, each angle ])rodnced into a curved 

 horn-like process, the upper process being absent from some forms of /'. poh/- 



damas. ? . The two membranous lobes situated in front of the vaginal cavity 



standing close together, forming one large lobe which is deeply cleft mesially. 



49. Papilio streckerianus Hour. (1884). 



Papilin stvcrherianus Honrath, Bci-l. Eiil. Ziitsvhr. x.xviii. p. 395. t. 8. fig. t. l.\. (J (1884) 



(Guahango.o, Peru). 

 Papilio mathani Oberthur, El. (VEnl. xiv. p. 1. t. 2. fig. 8. J, 12.? (1891) (Chachapoyas). 



S. A close relative of P. arr.hidamm. lilarkings of body pale greenish yellow, 

 not orange or reddish. Forewiug withont discal band above and below, but there 

 are in nearly every specimen vestiges of greenish streaks in the basal third of the 

 upperside, the streak along inner margin reaching sometimes as far as the greenish 

 spot situated in many sjiecimens at distal fourth ; the greenish yellow scaling is more 

 e.xtended on underside, covering here usually the greater half of the cell, often 

 extending anteriorly beyond the apex of the cell; in many specimens there are 



s')me greenish yellow spots posteriorly on disc. The discal band of the hindwing, 



on upperside, is variable in width ; it usually crosses the a])ex of the cell, but 

 in some specimens the cell-spot is just vestigial ; the marginal spots are always 

 large, being in some specimens twice as large as in others. The black discal baud 

 of the underside is always broad ; the silvery white submarginal spots SC^ — M' are 

 sharply defined ; there is sometimes a vestige of a red spot at the proximal side 

 of each white spot ; the red anal bar is always i)resent, while the red subcostal 

 bar is often replaced by white. 



?. Much paler than the male, the discal band of the upperside of the hindwing 

 strongly oj)alescent, this opalescent gloss being vestigial also in the female of 

 P. arc/iidainas. 



Genitalia as in P. archidamas. 



Early stages not known. 



Hal. Northern Peru, in the dry districts of the Maranon. 



It is quite possible that in a more southern district of AVest Peru a form exists 

 which connects P. streckeriamis with P. archidamas. 



In the Tring Museum 39 cJcJ from: Upper Maranon, east of Iluamachuco, 

 North Peru, dry country (0. T. Baron). 



50. Papilio archidamas I'oisd. (183G). 



(?) rapilio psillaciis tHoXwia, Sagg. Slor. Nal. Chili p. 211, 347 (1781). 



Papillon bias Roger, Bull. Snc. Linn. Bordeaux i. p. 159 (182('>) (Chili). 



Papilio archiihiuias Boisduval, Spec. Gen. Up. i. p. 321. r. 1(!3. (18.36) (Chili) ; Feisth., .1/";/. Zoi'l- 



(2). i. Ins. Up. p. 1 (1839) (Chili); Doubl., Usl hep. Im. Bril. .l/«.t. i. p. 14 (1845) (Chili) ; 



id., Westw. & Hew., Gen. Diurn. hep. i. p. 20. n. 242 (184(1) (Chili) ; Blanch., in Gay, Ilia. Fis. 



Chile, y.ool. vii. p. 8. Alias t. 1. fig. la. b. (1852) ; Gray, Cat. Lep. Ins. Brit. Mns. i. Pa/i. p. GG. 



11. 295 (18.52) (Chili) ; id., List Lep. Ins. Bril. Miis. i. Pa),, p. 70, n. 312 (185G) (Chili) ; Feld., 



Verh.Znnl But. Ges. Wien xiv. p. 297. n. IIG (1864) (Chili) ; Kit-by, Cut. Diurn. Lep. p. .121. 



n. 25c (187!) ; Mathew, Ent. Mo. Mag. xiv. p. 152 (1877) (Val|>ariLiso, Oct. to Jan. ; habit?, 



descr. of larval stages) ; Oberth., El. d'Enl. iv. p. 98. n. 302 (1880) (ChUi) ; Walk., Enl. Mo, 



