Genus Ancistromesus W. H. Dall, 1871

(5-4-1-1-3-5-2-1-0-0-0-0-0)
Ref. Keen, 1971 p 322
[see also as Subgenus under Genus Patella]

mexicanus (W. J. Broderip & G. B. Sowerby, 1829)
(5-4-1-1-3-5-2-1-1)
Syn. Patella (Patella) maxima A. Orbigny, 1841
Ref. Keen, 1971 p 322