Pupal suspension of Thais. 211 



throw it forward. Something of this sort must occur, — 

 when ? 



May 27. This specimen escaped observation but moved 

 the girth to nose-hooks some time between 1.15 and 3 p.m., 

 twenty- four hours after moulting to pupa. 



Second Specimen. — May 26, 12.35 p.m. Subspiracular 

 tubercles of 1st, 2nd, 3rd and 4th abdominal are now colour- 

 less and collapsed, dorsal and marginal of same region also 

 changing. 3rd and 4th abdominal segments are beginning 

 to enlarge. Incisions 4th to 5th abdominal getting wide; 

 up till half-an-hour ago no change was visible and segments 

 were not of very unequal lengths. 



1.16. Only a few anal warts still coloured. 



1.35. Only wart of 9th abdominal segment still coloured 

 red. 



1.50. Thermometer 74° Fahr. Abdominal segments large 

 and incisions wide, 3rd thoracic and 1st abdominal very 

 small. The higher temperature seems helping this 

 specimen on more rapidly than No. 1. 



2 p.m. Abdominal incisions wide, lower end looks like 

 end of pupa with larva skin overlaid and claspers (shrunk) 

 stuck on outside. 



2.20. 4th, 5th and 6th abdominal very large, incisions 

 wide ; some stretching, almost vermiform, movements. 



2.43. Genuine rhythmical vermiform motion begins 

 and head rises a little. 



2.50. Quiet again, the three free incisions (of pupa) 

 very wide ; from abdominal 4th to 5th incision to head, 



11 mm., to claspers, 9 mm. 



2.59. Movement beginning again, in 1st, 2nd and 3rd 

 abdominal segments. 



3.5. Regular vermiform movement from end to end. 



3.6. Skin accumulated at tail. 



3.7. Thoracic skin split, it slips down, the collapsed 

 warts passing under loop. 



3.15. Process finished. The getting rid of larval skin 

 is delayed a little by its fluid adhesion to pupa. The 

 cremaster got hold at second try, aud skin was shoved off 

 at two twists, after fluid adhesion gave in. Loop fell into 

 abdominal 3rd-4th incision as soon as skin left it, but in 

 twistings for shoving off skin it slipped quickly to back 

 of prothorax. To end of wings 8 mm., wings to cremaster, 



12 mm. 



3.22. Wings getting rapidly down to place. There are 



