NOTON ECTIDiE. 
715 
observed that small fish are eaten. E. E. Green in Ceylon observed 
the eggs to be laid under water in an aquarium (Entomologist, 1901, 
Fig. 489. —Eggs of belostoma indica. x 1. 
p, 113). The eggs of this species are laid in clusters on the stems of 
plants growing at the edge of water, so that the emerging nymphs can 
fall into mud. They are large pear-shaped eggs, the mass forming a 
very conspicuous object. 
Notonectim;. 
Forelegs inserted on posterior margin of prosternum. Rostrum 
free, three to four jointed. 
This family is very closely allied to the next and with it, at once 
distinguishable from all others when seen in the water. The point of 
difference is that these swim “ upside down, ” i.e ., on their backs 
