SOCIAL LIFE OF ANIMALS 497 



Longevity of Reptiles 



Animal Reputed A^ 



Giant tortoise loo 



Indian crocodile loo 



American alligator 40 



Boa constrictor 23 



Sphenodon, lizard 14 



Chameleon 4 



Consult S. S. Flower, Contributions to Our Knowledge of the Duration of Life 

 in Vertebrate Animals. III. Reptiles. IV. Birds. Proc. Z06I. Soc. of London, 1925, 

 p. 911 and p. 1365. 



Longevity of Amphibia 

 Animal Reputed Age 



Frog 12 years 



Toad 2,^ years 



Longevity of Fishes 



Eel 60 years (in Roman 



ponds) 



Longevity of Arthropods 



River crayfish 20 years 



Ant 15 years 



Spider (tarantula) 15 years 



Beetle 5 years 



Queen bee 5 years 



Worker bees 6 to 8 weeks 



Longevity of Annelida 

 Leech 27 years 



Longevity of Coelenterata 

 Sea anemone 59 years — recorded 



The Passerine birds are extremely short lived, most of them not exceeding 5 

 years in captivity. 



culture work, bird plasma is added because it lacks the blood platelets 

 and therefore does not clot so quickly. (See page 457.) 



At the spring meetings of the American Association of Anato- 

 mists in 1929, Dr. W. H. Lewis demonstrated moving pictures of 

 rabbit ova developing in autoserum. The fertilized eggs were 

 removed from the uteri at 21 to 71 hours and kept in autoserum, 

 sometimes augmented by embryonic juice. 



