172 Explanation of Plates. 



Plate XXII. Fig. 1. Appendages of male of M. pallescentella, 

 shows corresponding length of aedeagus 

 and saccus, and position of aedeagus 

 close to clasps, X 45. 

 Fig. 2. Appendages of Acraea natalica. Aedeagus 

 and saccus both very long. In $ the 

 ductus is seen to be very long; it is 

 twisted in the preparation; it is very 

 weakly chitinised, X 5. 



Plate XXIII. Fig. 1. Two specimens of the aedeagus of Curetis 

 bulis ; in the upper one, the membranous 

 sheath and a small portion of the floor 

 of the genital cavity have been kept with 

 it. The length of the sheath (sinus) 

 corresponds with that of the free 

 portion of the aedeagus, i. e. that 

 beyond the zone Z. In the lower figure 

 only a portion of the sinus remains, 

 but this is more than usually remains 

 with the aedeagus when it is dragged 

 out for separate examination. The 

 clothing of hairs on the sinus is well 

 seen in both preparations, X 24. 

 Fig. 2. Female appendages of apatura iris. The 

 figures refer to the numbers of the 

 abdominal segments. 8 is opposite the 

 ostium, leading to the long chitinous 

 portion of the ductus, corresponding to 

 the lengthy aedeagus in this species. 



MALE APPENDAGES OF PLEBEIIDS. 



Plate XXIV. Fig. 1. Agriades ihetis, X 45, shows the bulbous - 

 ended aedeagus fixed close to the dorsal 

 armature. 

 Fig. 4. Agriades escheri, shows also the long space 

 between the place where the zone is 

 fixed and the origins of the clasp, whose 

 bases only just appear at bottom of 

 figure, X 30. In both these figures, the 

 preparations being pressed flat, the 

 aedeagus appears to be in the same 

 plane as the ring, instead of nearly at 



