In transverse sections, corallites commonly subovate
or subelliptical, generally 1.
Cells are subovate
, egg-shaped, sometimes almost triangular, with a broadly rounded epitheca and narrowly tapered hypotheca terminating with a strong triangular spine, somewhat deflected ventrally.
Testis intercecal, postovarian, subovate
106 (87-123; n = 12) long, 46 (31-58; n = 12) wide; vas deferens looping left intestinal caecum; seminal vesicle elongate.
The carapace is subovate
when viewed from the side.
The tegmina are subovate
laterally, with the posterior margin marginate, and dark with whitish veins.
Flowers sessile, densely polystichously arranged, suberect to nearly erect, 50-55 mm long, odorless; sepals suboblong to subovate
, asymmetrical, apex obtuse and distinctly mucronate, ecarinate, free or nearly so, pale yellowish-castaneous, densely and coarsely white-lepidote, 25-28 mm long, including the 5-6 mm long castaneous mucron, ca.
in outline, its anteromedial corner produced into small and completely nonarticulating palp (Fig.
(disc-like) or 6 crescentric (hatchet-like) in side view; valves compressed in dorsal view 6.
Leaves orbicular to subovate
, coriaceous; usually in quite waters N.
th] segment); body overall medium brown with purplish suffusion, each metatergum with a prominent subovate
reticulated spot bilaterally and scattered tubercles, adults notably more pigmented than subadults and juveniles, which appear more uniformly light beige.
Tegmina white, costal, subcostal and radial sector areas dark, subovate
in lateral view; supra-anal plate triangular with well-defined rounded apex (Fig.
The saccular otoltih is subovate
with a strongly convex inner face and an L:H index of 1.