VARIATION AND HEREDITY IN TWINS 147 



while its partner has an identical double scute two 

 places from the left of band i. Fetuses III and VI 

 (the other pair) have the same element distributed 



C 30C^ 



\ €1 





rvT" 



7-> 



7.(^3 



I -.Go 



1 



r.Gi 



1 .6 1 



Z-€o 



I '.GO 



Z Gl 



Fig. so 



Fig. si 



Figs. 50, 51. — Showing the incidence of scute doubling in sets C 30 

 and K 70. (Details in text.) 



bilaterally but in band i on the left and in band 2 on 

 the right. 



Set K 70 (Fig. 51). Fetus I has a double scute 

 three places from the left margin of band 6, while fetus 

 III, belonging to the opposite pair, has a similar element 



