Subgenus (Cremides) H. & A. Adams, 1854

(5-4-1-2-1-1-4-9-4-0-0-0-0)
Ref. Abbott, 1974 p 27
Keen, 1971 p 318
Lindner, 1977 p 33
Vaught, 1989 p 6

alabastites L. A. Reeve, 1849 [T]
(5-4-1-2-1-1-4-9-4-1-0-0-0)
Ref. Abbott, 1974 p 27

asperella G. B. Sowerby, 1835
(5-4-1-2-1-1-4-9-4-2-0-0-0)
Ref. Kaicher, 1988 #5394 bw
Syn. Fissurella (Fissurella)ostrina L. A. Reeve, 1850
Ref. Keen, 1971 p 318 bw

barbadensis (J. F. Gmelin, 1791)
(5-4-1-2-1-1-4-9-4-3-0-0-0)
Barbados Keyhole Limpet
Ref. Abbott & Dance, 1982 p 27 c
Amer. Fish. Soc., 1988 p 53
Kaicher, 1988 #5446 bw
Lindner, 1977 pl 2 c
Syn. Fissurella (Fissurella) antillarum A. Orbigny, 1842;
Fissurella (Fissurella) bermudensis H. A. Pilsbry, 1890;
Fissurella (Fissurella) edititia L. A. Reeve, 1849;
Fissurella (Fissurella) intensa H. A. Pilsbry, 1890;
Fissurella (Fissurella) porphyrozonias J. F. Gmelin, 1791
Ref. Abbott, 1974 p 27 bw

barbouri I. P. Farfante, 1943
(5-4-1-2-1-1-4-9-4-4-0-0-0)
Ref. Abbott, 1974 p 28 bw
Kaicher, 1988 #5450 bw

chlorotrema K. T. Menke, 1847
(5-4-1-2-1-1-4-9-4-5-0-0-0)
[=Fissurella (Cremides) microtrema G. B. Sowerby, 1835]
Ref. Abbott, 1974 p 28

clenchi I. P. Farfante, 1943
(5-4-1-2-1-1-4-9-4-6-0-0-0)
Ref. Abbott, 1974 p 28

decemcostata J. H. McLean, 1970
(5-4-1-2-1-1-4-9-4-7-0-0-0)
Ref. Kaicher, 1988 #5434 bw
Keen, 1971 p 319 bw

deroyae J. H. McLean, 1970
(5-4-1-2-1-1-4-9-4-8-0-0-0)
Ref. Kaicher, 1988 #5435 bw
Keen, 1971 p 319 bw

gemmata K. T. Menke, 1847
(5-4-1-2-1-1-4-9-4-9-0-0-0)
White Keyhole Limpet
Ref. Kaicher, 1988 #5464 bw
Lindner, 1977 pl 2 c
Syn. Fissurella (Fissurella) alba P. P. Carpenter, 1857, not R. A. Philippi, 1845;
Fissurella (Fissurella) tenebrosa G. B. Sowerby, 1863, not T. A. Conrad, 1833
Ref. Keen, 1971 p 319 bw

humilis K. T. Menke, 1847
(5-4-1-2-1-1-4-9-4-10-0-0-0)
[=Fissurella (Cremides) microtrema G. B. Sowerby, 1835]
Ref. Abbott, 1974 p 28

longifissa G. B. Sowerby, 1863
(5-4-1-2-1-1-4-9-4-11-0-0-0)
Ref. Kaicher, 1988 #5399 bw
Keen, 1971 p 319 bw

macrotrema G. B. Sowerby, 1834
(5-4-1-2-1-1-4-9-4-12-0-0-0)
Ref. Keen, 1971 p 319 bw

microtrema G. B. Sowerby, 1835
(5-4-1-2-1-1-4-9-4-13-0-0-0)
Ref. Kaicher, 1988 #5405 bw
Syn. Fissurella (Cremides) chlorotrema K. T. Menke, 1847;
Fissurella (Cremides) humilis K. T. Menke, 1847;
Fissurella (Cremides) rugosa authors, not G. B. Sowerby, 1835
Ref. Abbott, 1974 p 28
Keen, 1971 p 319 bw

nigrocincta P. P. Carpenter, 1856
(5-4-1-2-1-1-4-9-4-14-0-0-0)
Ref. Keen, 1971 p 319 bw

nodosa (I. Born, 1778)++ [(1780)]
(5-4-1-2-1-1-4-9-4-15-0-0-0)
Knobby Keyhole Limpet
Ref. Amer. Fish. Soc., 1988 p 53
Lindner, 1977 pl 2 c
Syn. ? Patella (Patella) crusoe I. P. Farfante, 1943;
Patella (Patella) rudis P. F. Roding, 1798
Ref. Abbott, 1974 p 27 bw
Syn. Fissurella (Fissurella) rudis P. F. Roding, 1798
Ref. Abbott & Dance, 1982 p 28 c

crusoe I. P. Farfante
(5-4-1-2-1-1-4-9-4-16-0-0-0)
Ref. Kaicher, 1988 #5436 bw

nodosa (I. Born, 1778) [(1780)]
(5-4-1-2-1-1-4-9-4-17-0-0-0)
Ref. Kaicher, 1988 #5432 bw

obscura G. B. Sowerby, 1835
(5-4-1-2-1-1-4-9-4-18-0-0-0)
Ref. Kaicher, 1988 #5439 bw
Keen, 1971 p 321 bw

radiata J. B. P. A. de Lamarck, 1822
(5-4-1-2-1-1-4-9-4-19-0-0-0)
[=Fissurella (Cremides) rosea (J. F. Gmelin, 1791)]
Ref. Abbott & Dance, 1982 p 27

Form sculpta H. A. Pilsbry, 1890
(5-4-1-2-1-1-4-9-4-19-0-1-0)
[=Fissurel[la (Cremides) rosea (J. F. Gmelin, 1791)]
Ref. Abbott, 1974 p 27

rosea (J. F. Gmelin, 1791)
(5-4-1-2-1-1-4-9-4-20-0-0-0)
Rosy Keyhole Limpet
Ref. Amer. Fish. Soc., 1988 p 53
Kaicher, 1988 #5388 bw
Lindner, 1977 pl 2 c
Syn. Fissurella (Cremides) radiata J. B. P. A. de Lamarck, 1822 Var. or Form sculpta H. A. Pilsbry, 1890;
Lucapina itapema H. v. Ihering, 1927
Ref. Abbott, 1974 p 27 bw
Syn. Fissurella (Cremides) radiata J. B. P. A. de Lamarck
Ref. Abbott & Dance, 1982 p 27 c

rubropicta H. A. Pilsbry, 1890
(5-4-1-2-1-1-4-9-4-21-0-0-0)
Red-painted Keyhole Limpet
Ref. Abbott, 1974 p 28
Kaicher, 1988 #5393 bw
Keen, 1971 p 321 bw

rugosa authors, not of G. B. Sowerby, 1835
(5-4-1-2-1-1-4-9-4-22-0-0-0)
[=Fissurella (Cremides) microtrema G. B. Sowerby, 1835]
Ref. Abbott, 1974 p 28

spongiosa P. P. Carpenter, 1857
(5-4-1-2-1-1-4-9-4-23-0-0-0)
Ref. Kaicher, 1988 #5431 bw
Keen, 1971 p 321 bw

virescens G. B. Sowerby, 1835
(5-4-1-2-1-1-4-9-4-24-0-0-0)
Green Panama Keyhole Limpet
Ref. Abbott & Dance, 1982 p 28 c
Kaicher, 1988 #5404 bw
Syn. Fissurella (Fissurella) nigropunctata G. B. Sowerby, 1835;
Megatebennus cokeri W. H. Dall, 1909
Ref. Keen, 1971 p 321 bw

volcano L. A. Reeve, 1849
(5-4-1-2-1-1-4-9-4-25-0-0-0)
Volcano Keyhole Limpet, Volcano Limpet
Ref. Abbott & Dance, 1982 p 28 c
Amer. Fish. Soc., 1988 p 53
Kaicher, 1988 #5412 bw
Syn. Hemitoma (Hemitoma) golischae W. H. Dall, 1916
Ref. Abbott, 1974 p 28 bw

Form crucifera W. H. Dall, 1908
(5-4-1-2-1-1-4-9-4-25-0-1-0)
Syn. Fussurella (Cremides) volcano Var. crucifera W. H. Dall, 1908
Ref. Abbott, 1974 p 28

Var. crucifera W. H. Dall, 1908
(5-4-1-2-1-1-4-9-4-25-0-1-1)
[=Fussurella (Cremides) volcano Form crucifera W. H. Dall, 1908]
Ref. Abbott, 1974 p 28