40 



THE EGGS OF MAMMALS 



TABLE IV 



Estimates of the Diameter of Full-Grown Mammalian Ova 

 (From Hartman, 1929) 



Animal 



Monotremata 



Platypus 



Echidna 



Marsupialia 



Dasyurus 



Didelphis 

 Edentata 



Armadillo 

 Cetacea 



Whales 

 Insectivora 



Mole (Talpa) 



Hedgehog (Erinaceus) 

 Rodentia 



Mouse 



Rat 



Guinea pig 

 Lagomorpha 



Rabbit 

 Carnivora 



Dog 



Cat 



Ferret 

 Ungulata 



Horse 



Sheep 



Goat 



Pig 

 Cheiroptera 



Bat 

 Lemurs 



Tarsius 

 Primates 



Gibbon 



M. rhesus 



Gorilla 



Man 



^losT Pkobable Size 

 OF Egg in Micra 



2.5 mm. 

 3.0 mm. 



240 

 140-160 



80 



140 



125 

 100 



70- 75 

 70- 75 



75- 85 



120-130 



135-145 



120-130 



120 



135 



120 



140 



120-140 



95-105 



90 



110-120 

 110-120 

 130-140 

 130-140 



cially in the placental mammals) when comparison is made 

 with other vertebrates or inveterbrates. Hartman (1929) 

 has extensively reviewed the available data on fixed and 

 living material and has estimated the average size of the 

 Ii\dng OA^m for a number of species making allowance for 

 the degree of shrinkage in fixed preparations. His estimates 



