( 664 ) 



posterior ones reddish, these spots absent from one of onr specimens of P. eurijleon 

 clusoculis. 



Underside TpaXer than npper ; no distinct black cell-folds. Forewing withoiif 



red basal spots ; either entirely greenish brown, with basal and jiosterior areas 



deeper in tint, or marked with one or two grey discal patches. Hindwiug : three 



red basal spots, but the one in cell usually absent or vestigial, the costal one being 

 also often very small ; discal band of spots much more restricted than above and 

 pale j)ink in colour, sometimes vestigial or absent ; a row of red submarginal spots, 

 often vestigial ; a row of grey admarginal dots as above. 



?. Forewing : a patch across cell and two patches R- — M' on disc white. 



Band of hindwing much broader than in male, not broken uji into spots or incised 



distally on the veins, all red, or jiinkish buff washed with red distally. In 



P. c. clusocidis the female similar to male. 



Scent-organ : basal third of vein SM- either densely covered with numerous 

 greyish scales, which are smaller than the metallic scales situated before and 

 behind this vein, or the scales on SM^ also metallic and not reduced in size, The 

 absence of the scent-organ in the subspecies inhabiting Eastern Ecuador is a 

 very remarkable character. The length of the jiortion of SM^ covered with scent- 

 scales in the other subspecies is not constant. 



Genitalia: c?. Not essentially different from those of P. /mrmod/us and 

 P. pkion ; apical lobe of harpe large, asymmetrically rounded ; dorso-ventral ridge 

 dentate only ventrally ; central process at apex irregnlarly ronnded and denticulate ; 

 ventral process individually variable in width and length, sometimes triangular, 

 obtuse. 



Early stages not known. 



Hab. Costa Rica, southwards to Ecuador. 



Five subspecies. 



a. P. euryleon clusocuUs Bntl. (1872). 



Papilio clusocuUs Butler, Cist. Ent. i. p. 85 (1872) (Costa Rica) ; id., Lep. Exot. p. 163. t. 58. fig. 2. jj 

 (1874) ; Kirby, Cat. Lep. Rhop. p. 812. n. 354 (1877) ; Butl. & Druce, Proc. Zual. .Sw. Loud. 

 p. 3G4. D. 3G8 (1874) (Costa Rica) ; Staud., E:cot. T<i(jf. i. p. 19 (1884) (Chiriqui) ; Godm. & 

 Salv., Biol. Cenli: Amer., Rhop. ii. p. 209. n. 32 (1890) (Costa Rica ; Panama). 



6. Upper side : patches of forewing purer grey than in the other subspecies ; 

 discal patches extending in extreme specimens from SM^ forward beyond R', while 

 in the other extremes only one patch M' — M- and a small streak before M' are 



present ; cell with or without patch. Hindwing : red band broad, always entering 



cell, last two spots sometimes vestigial only ; spot SC-— R' very variable, sometimes 

 large, but usually small or absent ; rarely a dot before SC^ ; in one of our si)ecimens 

 a row of red submarginal spots confluent with the discal patches, no grey spots 

 in this specimen. 



Underside : forewing with two or three grey patches. 



? . Similar to male ; on forewing a creamy jiatch R'— M', and a smaller one 

 M' — M-, no spot in cell ; red patch of hindwing a little larger than in male. 



Scent-organ ])resent. 



Hab. Costa Rica ; (_!hirii]ui. 



In the Tring Museum \b i 6 from : Carillo, Costa Rica, 3U00 ft., October 1901 

 (A. Hall) ; Carillo, June— July 1903, and San Jos6, Costa Rica (Underwood), 



A female in coll. H. Grose-Smith. 



