XI.—On the Pituitary in Lepidosiren and its Development

Abstract

The Dipnoi form an archaic group of Fish with so many unusual features that it is of importance to work out the development of all their organs in detail, and this investigation was therefore undertaken. The early stages were studied in the collection of slides in the Zoology Department of Glasgow University, and the adult organs were obtained from the material brought back from the Gran Chaco by Dr. G. S. Carter in 1927. The work was done in Glasgow under Professor J. Graham Kerr, F.R.S., to whom I am deeply indebted. The larval stages are numbered according to his system in Keibel's Normentafeln, Heft x (3).