( 403 ) 



while the specimeus from Syria and Palestine have that denticulated portion ou an 

 average shorter than specimeus from England, Central Europe, Sikkini, China, and 

 Japan ; the tincus is thinner in nearly all British and Japanese individuals than in 

 most individuals from the interjacent countries. 



(2j The spring and summer broods are not different in the genital armature. 



(3) The prehensile portion of the harpe varies considerably in length ; the 

 amount of variation is 73 per cent. 



2. Papilio aegeus : f. 1 to 11. 



According to the wing-pattern the sj)ecies comprises a subspecies inhabiting 

 New Guinea and Aru (cieyeus ormeniis), another found in Australia (aniens aegeiis), 

 a third inhabiting the Kei Islands (itegeus keicmus), a fourth foiind on the Banda 

 Islands {itcgeiis a<lntstus), and a fifth is met with in New Britain {aegcuH 

 hismarcldanus). 



Of these we could dissect very long series of the first two forms, while the male-i 

 of the three other subspecies we have not examined for want of sulticient material. 



P. aegeus ormeiuis is in both sexes a very variable insect as regards colour, 

 while the Australian form aegeus aegeus is rather constant in that respect. 



The vulce (f 1, seen from above) is of the nstial triangular sha])e ; its ventri- 

 apical angle is sometimes more, sometimes less rounded, regardless of locality as 

 well as of wing-pattern. 



The harpe lies as in P. inachuon along the ventral edge of the valve, extending 

 from the base to the apex ; it is a rather thin blade with the free upper edge sharp, 

 but not conspicuously dentate, bearing only a fine denticulation at the projecting 

 ])ortions, and leans over dorsally. Before the middle it widens out triangularly to 

 form the submediun projection, and its free apical portion is raised above the level 

 of the margin of the valve and forms the apical projection. The length and form 

 of these two projections vary individually and subspecifically. 



a. ./''. aegeus ortnenus; f. 1 to 6. 



According to the development of the subapical white band of the forewing the 

 males belong to three varietal forms : S-wh. ormeniis, with the band complete on 

 upper- and underside ; c?-ab. pamlion, with the spots of the band partly obliterated; 

 (?-ab. Othello, with the band absent. The three forms occur together in the same 

 locality and are connected by all intergradations. The variation of the sexual 

 armature is entirely independent of that of the variation of the band ; individuals 

 of c?-ab. Othello are different inter {se, while some of them agree with certain speci- 

 mens of (J-ab. pandion or J-ab. ormenm, and so it is with the latter aberrations. 

 Tlie following remarks, therefore, refer to every form of the male. 



V. 1 is taken from an individual from Dutch New Giunea (coast near the 

 Arfak Mountains) ; in this perjieudicular view the apical projection of the harpe, 

 being more erect than the shorter submediau one, appears to be short. The har])e 

 of tjic same individual is represented in f. 2 ; the submedian projection is broad and 

 triangular, and differs obviously from the same projection of f. 3 to 5, which are 

 taken from individuals from the same locality and represent very well the amount 

 of variation we have found in aegeus ortnenus. In f. 5 the submedian 2)rojection is 

 very small, in f. 4 very high, in f 3 and 4 much slenderer than in f. 2. A si)ecimen 

 (f (5) from Finschhafen, (Jerman New Guinea, has the projection as broad as it is in 

 f. 2, and nearly as high as it is in f. 4. The usual form of the projection met with 



