Y. TA NA IC A. 
CONTENTS. 
page 
1) Dissimilarity of male and female gametic scries ia the stripetl-ycllow coupling. i 
2) Two new instances of the reduplication in silkworms. 5 
a) The repulsion between S and Y- 5 
b) The coupling between If -wd Y. 7 
3) Complex phenomena relating to the stripedncss. 11 
a) Occurrence of a rare zygotic series 2 AB : i aB : i ab. 1 1 
b) A peculiar type of complete coupling between S and Y- 
4) On the genetic constitutions of the striped and moricaud markings. 14 
