Occasional notes. I. Aperture of Conularia
Abstract
In 1873 I called attention to the inflection of the distal end of the shell in Conularia, whereby the four faces of the pyramid are uniformly inflected and bent down, but do not meet in the centre of the truncated end. A quadrangular opening is then left, with the four corners forming re-entering grooves, which join the angles formed by the union of the conical sides of the shell.
