12 SOCIÉTÉ ROYALE ZOOLOGIQUE ET MALACOLOCIQUE DE BELGIQUE. 



WiLsoN (E.-B.). — Notes on Merogony and Régénération in Renilla 

 (BiOL. Bull., IV, 5, 1903). 



— The Female Chromosome Croups in Syromastes and Pyrro- 



choris (Id., XVI, 4, 1909). 



— The Prohlem of Development (Science, N. S., XXI, N" 530, 



1905). 



— The Case of Anasa tristis [Id. , XXV, n» 63 1 , 1907). 



— Récent Researches on the Détermination and Heredity of Sex 



{Id., XXIX, n° 732, 1909). 



— Secondary Chromosome- couplings and the Sexual relations in 



Ahraxas {Id. Ibid., n" 748, 1909). 



