Genus Laqueus Dall, 1970

Type species:Laqueus erythraeus Dall, 1920.

Shells are smooth with large pores. Back part of pedal valve (beak) is strongly curved and has sharp side ribs. Deltidial plates are conjunct and concave. Pedicle collar is overhung. Cardinal process is absent. Ribbon-like connections between the branches of brachial skeleton and middle septum are well expressed and keep even in senile specimens.

Remarks. Systematic of the genus is not sufficiently studied at full length. There are 12 species at the Northern Pacific, and many of them can be considered as synonyms. Type species living near the cost of California differs from L. vancouveriensis only in its red colour. In the northern part of the Sea of Japan one species of the genus is known.