30 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
anatomy of Anurida maritima, and has some notes on Lepisma saceharina. 
The probable characters of the ancestors of Insects are judged from the 
'Insects 
Unsegmen, 
Led 
Worm 
evidence given by Palaeontology, Anatomy, and Embryology, and the 
following summary is given of the characters of the “ archentomon ” : — 
Segmented, bilaterally symmetrical, divided (perhaps slightly) into 
head, thorax, and abdomen. On each thoracic and abdominal (?) segment 
