Subgenus (Ancistromesus) W. H. Dall, 1871

(5-4-1-1-3-5-2-6-1-0-0-0-0
Ref. Abbott, 1974 p 29
Lindner, 1977 p 34
Vaught, 1989 p 7
[see also as Genus]

mexicana W. J. Broderip & G. B. Sowerby, 1829 [T]
(5-4-1-1-3-5-2-6-1-1)
Giant Mexican Limpet
Syn. Patella (Patella) maxima A. Orbigny, 1841
Ref. Abbott, 1974 p 29 bw
Syn. Patella (Patella) gigantea R. P. Lesson,
Patella (Patella) maxima A. Orbigny
Ref. Abbott & Dance, 1982 p 29 c