Cytological Studies on Dipnoi, Urodela, Anura, and Emys

TORSTEN WICKBOM cytological facts in regard to the phylogenetic connection of the various groups examined. MATERIALS AND METHODS.Unfortunately, owing to the war, the number of species had to be confined chiefly to those which could be procured within the country.The material used for the present study consisted firstly of embryos, secondly of testicles and ovaries from the following species: Dip n 0 i. specimens from Australia.Embryos.Gambia. Epiceratodus ForsteriKREFFT. 5 Protopterus anneetens OWEN. 5 1 specimen Testes.U rod e I a. specimen specimens from Embryos.Ovaries.Viggbyholm.Testes.Vollsjo.Testes.Viggbyholm.Embryos.Ovaries.Scania.(.J. A. BOOK's preparations.)Testes.» 30 specimens.Derived from animals bought from SCl.OLTZE und POTSCHKE, Berlin.Embryos. 1 specimen.Bought from SCHOLTZE und POTSCHKE, Berlin.Testes.specimens from Viggbyholm, in the province of Uppland (Sweden).Testes.Vollsjo, in the province of Scania (Sweden).Testes.Viggbyholm. 5 10 2 Triturus vulgaris L.