Subgenus (Yoldia) H. P. C. Moller, 1842

(3-6-1-0-3-8-0-10-6-0-0-0-0)
Ref. Abbott, 1974 p 417
Wagner, 1984 p 47

abyssicola O. M. Torell, 1859
(3-6-1-0-3-8-0-10-6-1-0-0-0)
[=Portlandia (Yoldiella) lenticula (H. P. C. Moller, 1842)]
Ref. Wagner, 1984 p 50

amygdalea A. Valenciennes, 1846
(3-6-1-0-3-8-0-10-6-2-0-0-0)
Almond Yoldia Syn. Yoldia (Yoldia) gardneri I. S. Oldroyd, 1935;
Yoldia (Yoldia) limatuloides K. W. Ockelmann, 1954;
Yoldia (Yoldia) norvegica P. Dautzenberg & P. Fischer, 1912
Ref. Abbott, 1974 p 417 bw

arctica M. Sars, 1851
(3-6-1-0-3-8-0-10-6-3-0-0-0)
[=Yoldia (Yoldia) hyperborea S. L. Loven in O. M. Torell, 1859]
Ref. Abbott, 1974 p 417

cascoensis J. W. Mighels & C. B. Adams, 1844
(3-6-1-0-3-8-0-10-6-4-0-0-0)
[=Yoldia (Yoldia) myalis (J. P. Couthouy, 1838)]
Ref. Abbott, 1974 p 417

electra authors, not A. Adams, 1846
(3-6-1-0-3-8-0-10-6-5-0-0-0)
[=Adrana penascoensis (H. N. Lowe, 1935)]
Ref. Bernard, 1983 p 11
[see also under Family: NUCULLANIDAE]

ensifera W. H. Dall, 1897
(3-6-1-0-3-8-0-10-6-6-0-0-0)
[=Yoldia (Cnesterium) scissurata W. H. Dall, 1897]
Ref. Abbott, 1974 p 418

frigida O. M. Torell, 1859
(3-6-1-0-3-8-0-10-6-7-0-0-0)
[=Portlandia (Yoldiella) frigida (O. M. Torell, 1859)]
Ref. Wagner, 1984 p 49

gardneri I. S. Oldroyd, 1935
(3-6-1-0-3-8-0-10-6-8-0-0-0)
[=Yoldia (Yoldia) amygdalea A. Valenciennes, 1846]
Ref. Abbott, 1974 p 417

glacialis "Gray" of authors, not J. E. Gray, 1828
(3-6-1-0-3-8-0-10-6-9-0-0-0)
[=Yoldia (Yoldia) hyperborea S. L. Loven in O. M. Torell, 1859]
Ref. Abbott, 1974 p 417

hyperborea S. L. Loven in O. M. Torell, 1859 [T]
(3-6-1-0-3-8-0-10-6-10-0-0-0)
Arctic Yoldia Syn. Yoldia (Yoldia) arctica M. Sars, 1851;
Yoldia (Yoldia) glacialis "Gray" of authors, not J. E. Gray, 1828
Ref. Abbott, 1974 p 417 bw

intermedia M. Sars, 1865
(3-6-1-0-3-8-0-10-6-11-0-0-0)
[=Portlandia (Yoldiella) intermedia (M. Sars, 1865)]
Ref. Wagner, 1984 p 49

lenticula H. P. C. Moller, 1842
(3-6-1-0-3-8-0-10-6-12-0-0-0)

amblia A. E. Verrill & K. J. Bush, 1898
(3-6-1-0-3-8-0-10-6-12-1-0-0)
[=Portlandia (Yoldiella) lenticula (H. P. C. Moller, 1842)]
Ref. Wagner, 1984 p 50

limatula (T. Say, 1831)
(3-6-1-0-3-8-0-10-6-13-0-0-0)
File Yoldia
Ref. Abbott, 1974 p 417 d

limatuloides K. W. Ockelmann, 1954
(3-6-1-0-3-8-0-10-6-14-0-0-0)
[=Yoldia (Yoldia) amygdalea A. Valenciennes, 1846]
Ref. Abbott, 1974 p 417

liorhina W. H. Dall, 1881
(3-6-1-0-3-8-0-10-6-15-0-0-0)
Ref. Abbott, 1974 p 417d

myalis (J. P. Couthouy, 1838)
(3-6-1-0-3-8-0-10-6-16-0-0-0)
Comb Yoldia
Syn. Yoldia (Yoldia) cascoensis J. W. Mighels & C. B. Adams, 1844;
Yoldia (Yoldia) oblongoides W. Wood, 1840
Ref. Abbott, 1974 p 417 bw

norvegica P. Dautzenberg & P. Fischer, 1912
(3-6-1-0-3-8-0-10-6-17-0-0-0)
[=Yoldia (Yoldia) amygdalea A. Valenciennes, 1846]
Ref. Abbott, 1974 p 417

oblongoides W. Wood, 1840
(3-6-1-0-3-8-0-10-6-18-0-0-0)
[=Yoldia (Yoldia) myalis (J. P. Couthouy, 1838)]
Ref. Abbott, 1974 p 417

plena W. H. Dall, 1908
(3-6-1-0-3-8-0-10-6-19-0-0-0)
[=Yoldia (Cnesterium) scissurata W. H. Dall, 1897]
Ref. Abbott, 1974 p 418

regularis A. E. Verrill, 1884
(3-6-1-0-3-8-0-10-6-20-0-0-0)
Ref. Abbott, 1974 p 418

sapotilla (A. A. Gould, 1841)
(3-6-1-0-3-8-0-10-6-21-0-0-0)
Short Yoldia
Syn. ? Nucula gouldii J. E. De Kay, 1843
Ref. Abbott, 1974 p 417 bw

solenoides W. H. Dall, 1881
(3-6-1-0-3-8-0-10-6-22-0-0-0)
Ref. Abbott, 1974 p 418 d