51 



also is as in a normal specimen, consisting of the uncus, and the anal 

 tube, with its dorsal chitinous line. 



The ring of the ninth segment seems to consist of all its normal 

 parts, but its two sides especially, as already noted, towards the 

 saccus are somewhat collapsed towards each other, due to the 

 absence of the clasps, and of the jedceagus and its accompani- 

 ments. 



These parts exist entirely separately, and vvith no apparent connec- 

 tion with the exterior, in the fifth and sixth abdominal segments. 

 That they are in these particular segments is possibly not a point to 

 which importance should be attached, as they have all the appear- 

 ance of lying free in the abdominal cavity, and may, in preparing the 

 specimen, have altered their position appreciably. However, that is 

 their position. They are not, of course, spread out as in normal 



vjur 



Diagram to show parts in normal relation to each other and to the 

 pupal skin. A. Pupal skin. b. Parts external in specimen, c. Parts 

 internal in specimen. 



appendages displayed when mounted by Mr. Burrows, being within 

 the abdominal walls and softened by maceration ; they are somewhat 

 twisted together, but not so as to make it otherwise than probable, in 

 fact almost certain, that they are in fairly natural relations to each 

 other. There are the two clasps, the asdoeagus with its supports, 

 but its eversible membrane (vesica), armed with its usual darts, etc., 

 does not appear to be fully developed. There are, moreover, two 

 curious dark hemispheres, which cost some study before their nature 

 became apparent. They are the two eminences that in the male 

 pupa mark the site of the genital appendages. These must have 

 been absent from their proper position in the pupa just as the 

 developed appendages are absent from their proper site in the 

 imago. 



I think this fairly describes the condition present in this specimen, 

 but reference to the photographs of the preparation will probably 

 assist in understanding its peculiarities. 



