Ellipsocephalus Zenker, 1833,[1] is a genus of blind Cambrian trilobite, comprising benthic species inhabiting deep, poorly lit or aphotic habitats.

[2] E. hoffi is a common trilobite mainly from central Europe (Czech Republic).

It has opistoparian facial sutures that are directed slightly outward from both front and back of the eyes[clarification needed].

The glabella has approximately parallel, slightly concave sides and is rounded frontally.

The preglabellar field is somewhat inflated and librigenae are half as wide as the fixigenae.