Subgenus (Nuculana) H. F. Link, 1807

(3-6-1-0-2-2-0-2-6-0-0-0-0)
Ref. Bernard, 1983 p 11
Keen, 1971 p 31
Wagner, 1984 p 46

pernula (O. F. Muller, 1779)+ [(1771)]+
(3-6-1-0-2-2-0-2-6-1-0-0-0)
Muller's Nut Clam, Northern Nutclam
Ref. Abbott & Dance, 1982 p 290 c