( 182 ) 



It is certainly wroug to say the Amboinese Papilio eurijjxjlus is ;i species, aud 

 b/raon from Qneeiisland, /^aOT/i/('//«s from Celebes, etc., are only subspecies of the 

 Aiuboiuese 1'. eitri/pylus L. Highlly the Amboiuese etiri/pylus ought also to be 

 treated as subspecies, so that we could speak of P. euri/pi/lus L., meaning the entire 

 species with all its subspecies, and of P. eurijpyliis eunjpylus L., P. eurypi/lus 

 hjcaon FelJ., P. eiirypylus pamphylua Feld., P. eurypylus mikado Leech, etc., 

 meaning the local races. This system of nomenclature, which could not be carrieil 

 out in NoviTATES Zoologicae as it is against the rules ot nomenclature adopted by 

 the Editors, would often much simplify the identification of the Papilios of old 

 authors ; in every case of Eastern I'ajjilios (except P. lacedemon Fabr. and P. 

 (imphitrion Cram.) we can ascertain beyond doubt which species Linn^, Fabricius, 

 etc., had before them, but the special subspecies remains sometimes uncertain. 

 In snch query cases the oldest name could be kej)t for the whole species, while every 

 subspecies would have to receive a name of its own. 



Many remarkable facts concerning the variation aud gcograi)liical distribution, 

 a few of which the reader will find mentioned in the course of this paper, jiresented 

 themselves to us : liut we think it better not to give an account of them before we 

 have dealt with the Papilios of the globe, in order to avoid unnecessary repetition, 

 and to be able to illustrate more fully the relations between continuous and 

 discontinuous variation on one side and the characters of subspecies aud closely 

 allied species on the other. 



 Subcostal nervulc(br,'inch). 



Ti:RMiM>i.o(iY OF Necration. 



I"- Praecostal nervuie (hindwings only). 



1 . Ccstal nervure. 



■J. SulK.'o.'ital nervure and its branches : 



2" First 



2'' Second 



2' Tliird 



2" Fourtli 



2'- Fifth (lowery 



2''' Stem of fourth and fiftli subcostal 

 branches. 



;i. Discocellular nervules (veinlets), namely : 

 3" First (upper) discocellular nervuie. 

 3'' Second (middle) „ „ 



•S' Third (lower) „ „ 



4. Discoidal nervules, namely : 



4 First (ujiper) discoidal nervuie. 

 4''- Second (lower) „ „ 



.'). Median nervure and its branches : 



o" First (upper) median norvule (branch). 

 .0'' Second (middle) „ „ „ 



h' Third (lower) „ „ ,. 



I'.. Submcdian ncn'ure. with a short branch on 

 forewings (6 "). 



