vi Contents 



No. 4 (March, 1920) 



PAGE 



R. C. PuNNETT. The Genetics of the Dutch Rabbit — A criticism. 



(With two text-figures and Plate XI) 303 



Masao So and Yoshitaka Imai. The Types of Spotting in Mice and 



their Genetic behaviour. (With Plate XII) . . . .319 



L. DoNCASTER. The Tortoiseshell Tomcat — A Suggestion. . . 335 



H. Onslow. The Inheritance of Wing Colour in Lepidoptera. 

 III. Melanism in Boarmia consortaria (var. consobrinaria, 

 Bkh.). (With Plate XIII) ....... 339 



E, J. Allen and E. W. Sexton. Eye-Colour in Gamniarus. (With 



Plate XIV and one diagram) ....... 347 



