The Spermatogenesis of Lepidosiren paradoxa

Abstract

ABSTRACT The material for this work was obtained during an expedition to the swamps of the Paraguayan Chaco, undertaken primarily for this purpose. The spot where the Lepidosirens were collected was a station of the South American Missionary Society called Naktetingma, about ninety miles west of Villa Concepcion, and about a league from the spot which Prof. Graham Kerr made his headquarters while collecting his material for working out the embryology of this fish. It is to him that I owe the whole idea of making this expedition. The expenses of the expedition were defrayed by the Government Grant Committee of the Royal Society and by the managers of the Balfour Fund of the University of of Cambridge, to both of which bodies I should like to take this opportunity of conveying my thanks. I should also like to acknowledge my indebtedness to the South American Missionary Society for the help they so cordially gave me, and especially to the little band of missionaries at Naktetingma, who most generously provided me with horses, waggous, bullocks and a home during the whole of my stay in the Chaco, and more important still, procured Indian hunters for me, and, in fact, ensured the success of the expedition.