Shell small, moderately convex, of a pale slate color, covered with a dark blackish brown pilose periostracum more or less disposed in radiating lines; beaks low. plump; hinge area narrow, with a well-marked fossette; interior of shell dull bluish white, with six posterior and three (or four) anterior teeth bifid at their summits; basal margin of the valves and part of the anterior and posterior margins denticulate, the upper portions plain. Long. 6.0; alt. 6.0; diam. 3.0 mm.

PANAMIC LIMOPS Limopsis panamensis Dall, 1902a: 559; L. diegensis Dall, 1908c: 395; L. juarezi Dall, 1908e: 396; L stimpsoni Dall, 1908c: 396; L. diazi Dall, 1908c: 397. Shell small, ovate, somewhat inflated. Periostracum densely hirsute; setae shorter than in L. akutanica and L. tenella. Hinge plate short, narrow, slightly arched. Inner ventral margin crenulate, with weak internal radial sculpture. Length to 15 mm. A member of Oliver's (1981) morphological class V. Locally abundant, from Tufts Abssal Plain, Oregon (45.0°N) [LACM], to Isla Cedros, Baja California (28°N) [LACM], to Panamá (9°N) [USNM], in 130 -3,900 m. Literature: Keen (1971: 54), Oliver (1981: 83, 86).

This little shell is quite similar to Limopsis minuta but is constantly smaller, of a different color, and with the pelage much blacker and in closer-set lines; the form of the valves when compared with Limopsis minuta of the same size is more quadrate, the denticulation of the inner margin less extended, and the valves are more delicate.

Dredged in Panama Bay