THE WALKING-FISH OR MUD-SKIPPER (PERIOPHTHALMUS), COMMON AT THE MOUTHS OF RIVERS IN TROPICAL AFRICA, 



ASIA, AND NORTH-WEST AUSTRALIA 



It skips about by means of its strong pectoral fins on the mud-flats; it jumps from stone to stone hunting small shore-animals; 

 it climbs up the roots of the mangrove-trees. The close-set eyes protrude greatly and are very mobile. The tail seems to help in 

 respiration. 



Photo: " The Times." 



THE AUSTRALIAN MORE-PORK OR PODARGUS 



A bird with a frog-like mouth, allied to the British Nightjar. Now in the London 

 Zoological Gardens. 



The capacious mouth is well suited for engulfing large insects such as locusts and man- 

 tises, which are mostly caught on the trees. During the day the More-pork or Frog- 

 mouth sleeps upright on a branch, and its mottled brown plumage makes it almost 

 invisible. 



