( 496 ) 



connection of the lateral plates of the suiumit in porhlinus, mandarinus, ajax, 

 leosthenes is, to a certain extent, in favour of Elmer's opinion that there is a 

 close relationship between the first two and between the last two species. 



■24. Papilio sarpedon: f 182 to 184. 

 The ventral portion of the eighth segment covers the vaginal region roof-like. 

 The intersegmental membrane bears a vertical strong foM ( /'), and there is between 

 the fold and the vaginal orifice a strongly ciiitiuiscd, smooth, impression (i). The 

 margin of the orifice of the vagina is slightly raised laterally and produced ventrally 

 into a process {a), the form of which will be seen from f 183, which represents 

 the organ viewed from the dorsal side. F. 182 and 183 are drawn from a 

 Japanese individual. F. 184 is taken from a sjiecimen of l^. Hnrpi'clon rhoredon 

 from Queensland; the process is broader at the base, and the angles at the apical 

 sinns are more ronnded ; the difi'erence between f. 183 and 184 is slight, but seems 

 to be fairly constant. We have not found any diflference between the processes 

 of P. sarpedon aorpedon, mrpedon M)nijdscintus, xiirpedon teredon, and sarpedon 

 milon (!). The individual variation in the form of the process is extremely slight 

 in the specimens examined. 



25. Papilio aristeus; f. 185 and 186. 



We have examined some Queenslandian females of P. aristeus parmatus, and a 

 female of P. aristeus hermocrates from Kalao (between Celebes and Flores); both 

 subspecies agree in the form of the eighth segment and in the genital armature, but 

 in hermocrates the outline of the ventral (median) piece of the summit is indicated 

 by a fine ridge. F. 185 and 186 are taken from a Queensland example. 



The vaginal armature consists of two chitinised lappets (f 186, a and a') which 

 protrude ventrally, and of which the lateral edge runs upwards as a strong ridge, 

 which is homologous to the vertical fold of f 182, to the ventral margin of the 

 eighth segment. 



26. Papilio macfarlanei : f 18T and 188. 



At each side of the vagina there is a broad and strongly chitinised ridge {/), 

 homologous to the vertical fold of f. 182, and bearing on the upperside a covering 

 of irregularly folded small lappets. The margin of the vaginal orifice is ventrally 

 produced into a bifurcate process (« in f 187 and 188} which corresponds to the 

 two lappets of fig. 186. 



27. Papilio agamemnon; f. l^'-'. 



The apparatus is similar to that of 1\ macfarlanei, but the fork-like process 

 has no stem and is connected with the folded intersegmental membrane («) by a 

 short bar visible in f. 189 between the two branches of the fork. We have not 

 noticed any variability in the armature of this species. 



Though our researches on the genital armature (A \}&^ female sex of Papilio are 

 quite incomplete, we are nevertheless justified in drawing some general conclusions 

 from the facts of variation illustrated by f. 156 to 189. 



(1) The prehensile ajiparatus consists of the armature of the orifice of the 

 vagina, and the sjiecial folding of the intersegmental membrane. 



