ADAPTATIONS TO HAUNTS AND SEASONS 291 



often, and only regains a little strength after resting for 

 several minutes. Then she wanders at random, and ends 

 by falling into the water, and floating on the surface, waits 

 for death, which is never long delayed." He noticed that 

 her feet often became caught in the gelatinous substance 

 of her egg-tube ; then she fails to disengage herself and dies 



Fig. 73. — Submarine Midge (Pontomyia natans), Samoa, a, male 

 (dorsal view) ; b, female (side view), X 20. After F. W. Edwards 

 (Proc. Zool. Soc. 1926). 



resting on her eggs. The reduction of the jaws in these 

 midges, so that they are incapable of feeding, prepares us 

 to expect that they do not long survive the functions of 

 pairing and egg-laying ; the week of low spring tides during 

 which they are active, is enough for the perpetuation of 

 the race. The eggs are hatched a week after laying, and 

 the beautiful little green larvae feed on the Cladophora that 



