vi Contents 



No. 3 (October, 1920) 



PAGE 



JoHS. Schmidt. Racial Studies in Fishes. IV, Experimental Investi- 

 gations with Zoarces viviparus, L. (With two Text-figures) . 179 



S. C. Habland. Inheritance of certain Characters in the Cowpea 



(Vigna sinensis). II . . . . . . . . .193 



S. C. Harland. Inheritance in Ricinus communis, L. Part I . . 207 



S. C. Harland. Inheritance in Dolichos lablab, L. Part I . . 219 



S. A. Arendsen Hein. Studies on Variation in the Mealworm, Tene- 

 brio molitor. I. Biological and Genetical Notes on Tenehrio 

 molitor. (With sixteen Text-figures and one Diagram) . . 227 



No. 4 (December, 1920) 



Julian S. Huxley. Notes on an Alternating Preponderance of Males 



and Females in Fish, and its possible significance . . . 265 



R. C. PuNNETT and the late Major P. G. Bailey. Genetic Studies 

 in Poultry, II. Inheritance of Egg-Colour and Broodiness. (With 

 thirteen Text-figures and Plate IX) . . . . . .277 



W. E, Castle, The Genetics of the Dutch Rabbit— A Reply . . 293 



C. C. Little. Is the Fertile Tortoise-Shell Tom Cat a Modified 



Female? 301 



W, E. Agar, The Genetics of a Daphnia hybrid during Partheno- 

 genesis, (With three Text figures) ...... 303 



