Ensis americanus (Gould in Binney, 1870)
American Razor
Description
Slightly curved shell up to about 15cm in length. Greyish violet in colour with olive green periostracum. Shell sculptured with smooth horizontal and vertical lines with clear growth lines.
Key identification features
- Pallial sinus reversed S-shape pointing to posterior adductor scar
- Relatively broad shell (length : breadth ratio of 6:1)
- Posterior adductor scar very close or joined to pallial sinus
- Foot retractor scar opposite ligament insertion
Habitat & ecology
Burrows in fine or silty sand. Remains close to the surface while submerged in water, retreating to a depth of up to half a metre when exposed.
Similar species
(View comparison chart)- Ensis arcuatus has a narrower shell and U-shaped pallial sinus