(Sars, 1866)
Description:
Carapace with concentric ribbing in anterior and ventral areas. The anterior ribs are conspicuous and beaded with small tubercles. Sieve-pores particularly conspicuous. Anterior vestibulum relatively broad. Distal process of male copulatory appendage relatively small for genus, rounded (E. argus 8 ).
Habitat:
Sublittoral.
Remarks:
Horne & Rosenfeld (1986) discussed the former confusion over the relationship between E. argus and E. undulata, described by Klie (1929) from the Baltic, and concluded that the two were synonymous.
Distribution:
E. argus is a fairly common species around British coasts; it has also been widely recorded off NW European and Scandinavian coasts and in the Baltic.