Shell small, thick, ventricose, very inequilateral, subquadrangular, strongly radiately ribbed. Hinge plates narrow, with a long cancellated posterior ridge; below the anterior portion of the umbo there is a short subquadrangular and cancellated area with three round small, tubercles in front. Distribution: Australia, New Zealand. Type species: Hochstetteria costata Bernard 1896.

Remarks: Related to the genus Philobrya Carpenter 1872, type species P. setosa Carpenter, but distinguished by the strong radial costations, prodissoconch formation and hinge teeth.