ON THE EGGS AND INSTARS OF SCUTIGERELLA. 743 
emitting little ridges or ribs from the base (usually five ribs), 
which form a sort of reticulation over the surface. They are 
nearly globular, about $ mm. in diameter, and seem large in 
% 2 
Fra. 2.—Ventral view of posterior segments (8, 9) of newly-hatched 
animal. 
Fia. 5.—Adult female. 1—16 tergites. 
comparison with the female. We took the eggs in February 
and March, but there are probably broods throughout the 
year. 
The newly-hatched animals have seven pairs of legs, and 
acquire a pair of legs at a time till mature, when they possess 
