STAGING OF AMPHIBIAN EMBRYOS 



81 



RANA PIPIENS 



73. - 84. Types of abnormalities found most frequently among partlrenogenetic or androgenetic tadpoles. 

 85. - 89. Oedema - associated with haploidy as well as osmotic unbalance. 

 90 - 94. Haploid tadpoles with reduction of head stmctures. 



95'. The typical haploid tadpole with microcephaly, dorsal-flexion of the tail, telescoping of the entire 

 body, reduction of gills, etc. 



