( 488 ) 



SOME NEW AERICAN PAPILIOS. 

 BY THE HON. WALTER ROTHSCHILD, Ph.D., AND KARL JORDAN, Ph.D. 

 1. Papilio dardanus polytrophus subsp. nov. 

 VERY variable ami small form, which in the c? is distinguished by the 



A 



black band of the npperside of the hiodwing being similar to that of 

 West African dardanus^ by the posterior portion of this band (situated at abdominal 

 margin) inclndiug a spot of the ground-colour, which spot is either isolated or 

 is connected with the pale marginal anal spot ; further by the black spot at 

 anal angle being reduced, and by the clasper bearing a prominent tooth above 

 the sawblade-like harpe, as is the case in the East and South African forms, 

 the tooth being absent from the West African dard. dardnnus and also from 

 the form inhabiting the Comoro Islands. In Kaviroudo dardcniiis polytrophus 

 intergrades with dardanus dardanus in colour and structure. We shall more 

 fully enter into this question at another place. The female sex of polytrophus 

 is more variable than that of any other form of dardanus. The specimens agree 

 partly very closely with individuals from the lowland districts of British and 

 German East Africa {P. d. tihullus). The tliree submargiual spots W — SM^ of the 

 forewing are generally prominent and often rounded, and the snbmarginal spots 

 of the hindwing are also well marked. A comparison of the various ? -forms 

 with such from other localities will be given elsewhere. The most interesting, 

 form is that in which the markings of the forewing are pale straw-colour (paler 

 than the ground-colour in the male), and are enlarged and merged together, 

 occupying the greater proportion of the wing, a curved costal patch and the 

 outer marginal area remaining black, the wing thus somewhat resembling that 

 of the ? ? of P. dardanus meriones (Madagascar) and P. d. antinorii (Abyssinia). 



Hab. Kikuyu Escarpment, British East Africa (W. Doherty). 



A long series. 



2. Papilio sosia spec. nov. 



cJ. Intermediate between P. bromi'is and nireus. The baud of the npperside 

 of the wings varying much in width individually, narrow-banded specimens 

 resembling P. nireus nirens, and broad-banded ones P. bromius bromius. The 

 narrow-banded individuals can be distinguished from P. nir. nireus by the band 

 of the hindwing being proportionally wider behind cell, extending close to base of 

 vein M^, the portion M' — (SM') of the blue-green band being longer than in nireus, 

 reaching farther l)asad, further by the presence of a more or less complete series 

 of blue-green snbmarginal dots on the npperside of the forewing, and by the 

 rounded claspers and bipartite harpe. The broad-banded specimens differ from 

 P. bromius bromius in the longer tail, the shorter blue-green streak M^ — (SM') of 

 the npperside of the hindwing and in the harpe. There are no white postdiscal 

 patches on the underside of the forewing, or only traces of such patches. 



(Masper rounded as in bromius, not triangular as in nireus. Harpe with 

 two pointed processes, the one horizontal, slender, long, curved at end, more or 

 less sparsely dentate at apex ; the other projecting horizontally from the edge of 



