( 1«^ ) 



That the females from the Am Ishuids are not constant is clearly enough proved 

 by their having received the names of nrriiana Keld., kirschi Oberth., eumneus 

 Ivijjpun (and (joliath Oberth. ?). 



After having compared extensive series of specimens from different localities, I 

 come to the conclusion that T. prouomus ((iray), nrclildeiis ((iray), cronius (Feld.), 

 IritoH (Feld.), pe(/asiis (Feld.), kirschi (Oberth.), rjoliath (Oberth.), Iiecnha (Rub.), 

 eiimaeus (Eippon), i-alenlinus (\'uillot), and horneiiianui (I'agenst.) are all individual 

 aberrations, and must either lie treated as such or as synonyms, and that there are bul 

 six geographical forms of Troidi's jjri'iiiius (L.), which can be grouped as follows : — 



I. (f with the median vein of the forewings black. 



(a) : T. priamus (I.,.) from tlie Southern Moluccas (Amiioina and Ceram) ; 

 {h) : T. priamus euphorion (Gray) from North Australia ; 

 (c) : T. priainv^ richmondms (Gray) from the southern parts of Eastern 

 Australia. 



II. c? with the median nervure of the forewings above green ; forewings more 

 pointed at the apex, then- hind angles le.ss I'ounded than in tlie ]ireceding forms; 

 hindwings in <S and $ less evenly rounded, with the anterior angle more distinct. 



(il) : T. •priamus poseidon (Doubl.) from New Guinea, Waigeu, Aru, 

 D'Entrecasteaux Lslands and the other islands near the coast of New- 

 Guinea, Cape York; 

 (e) : T. priamus boisduvali (Montr.) from ^^'oodlark Island ; 

 (/): T. priaiauji urvillianus (Guer.) from New Britain-, New Ireland, and 

 the Solomon Islands. 

 Whether boisdnviili will be maintained as a local form when fresh material 

 conies from Woodlark Island seems to me to be rather doubtful. The two groups 

 of subspecies, it must be understood, are not constant in those characters by whicli 

 I have separated them; it is, however, very remarkable that, whilst nearl;/ <dl the 

 male specimens from New Guinea and the adjacent islands have the median vein 

 more or less conspicuously covered with green scales, these green (or blue) scales are 

 very sparse or absent in most individuals from the Bismarck Archipelago \T. priamus 

 urvillianus (Guer.)], and always absent from the subspecies inhabiting Australia 

 and the Southern Moluccas. We shall find many cases in the course of this paper 

 illustrating the same interesting fact, that the subspecies from New Britain, New 

 Ireland, or the Solomon Islands, from Australia, the Southern JMoluccas, and often 

 those found in the Aru and Key Islands, have certain positive or negative characters 

 in common by which they are distinguished from the New Guinea race (compare 

 /'. ai/amemnon iieopommeranius Honr. and F. aijamemnon argynnu^ Druce ; 

 1'. ulysses orsippns Godm. & Salv. ; and P. lUysses L. 5 ; /-". pheslus Guer. and 

 /'. ii.irJn-ax ei/ipias Misk. ; P. polydorm E. and /'. iiolyilorn.s norobritttiinicus 

 ni., etc.). 



('0 : T. priamus (L.), forma typ. [6, ^,nuAam.']. 



<^ . The number uf black suhdhscal spots on the upperside of the hindwings 

 varies from 2 to (i in my series; the costal yellow mark is always present ; many 

 individuals have from 1 to 3 submarginal yellow spots between the subcostal and 

 second discoidal ner\ules. 



Below, the discal and submarginal green markings of the forewings are sometimes 

 merged together, and include a series of small black spots; in other examples those 

 markings are rather widely separated. On tlie liindwings the costal nervm-o. the 



