I.—The Œsophagus of the Stenoglossan Prosobranchs

Abstract

The structure of the anterior part of the alimentary canal of stenoglossan prosobranchs has been previously investigated by several workers, of whom the most important are Haller (1888) and Amaudrut (1898), although Haller's account, accurate so far as it goes, was published before there was any real knowledge of the comparative morphology of that part of the prosobranch gut. This knowledge we owe to Amaudrut, but in the case of the stenoglossan œsophagus the description which he gives is wrong, the various parts being orientated upside down.