' Shell globular and ventricose; aperture oval and canaliculated; operculum spiral.
Nearly allied is the jumping Antechinomys laniger, of East Central Australia, an elegant mouse-like creature, with large oval ears, elongated limbs, a long and tufted tail and no first hind toe.
The result of cleavage in all cases is a typical blastula, which when set free becomes oval and develops a flagellum to each cell, but when not set free, it remains spherical in form and has no flagella.
In the Algae, such as Fucus, Volvox, Oedogonium, Bulbochaete, and in the Fungus Monoblepharis, the spermatozoid is a small oval or elongate cell containing nucleus, cytoplasm and sometimes plastids.
The fish is also said to be represented in the oval-shaped figure, pointed at both ends, and formed by the intersection of two circles.