cross-furrow

The cross-furrow is either spiral or circular; the longitudinal furrow is usually wide and occupies the greater part of the anterior half of the shell.

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 1906

Ledge is continued dorsally to Genus _Ornithocercus_ the cross-furrow

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 1906

The longitudinal furrow is broader at the posterior extremity than at the cross-furrow.

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 1906

Diagnostic characters: The cross-furrow is above the center of the body, and its edges, as well as the left edge of the longitudinal furrow, are usually produced into characteristic ledges; those of the cross-furrow usually form great funnel-like anterior processes, while those of the longitudinal furrow usually form great, lateral, wing-like processes ornamented by ribs and other markings.

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 1906

The flagella arise near cross-furrow or, in some cases, in longitudinal furrow.

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 1906

Diagnostic characters: The cross-furrow is nearly central (see, however, _Oxytoxum_); the body may or may not have a shell; the shell may or may not be composed of distinct plates; the plates are distinguished as _equatorial_ (_i. e._, bordering the cross-furrow),

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 1906

_apical_, and _antapical_, while still another, the "rhombic plate", may be present, extending from the cross-furrow to the apex.

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 1906