46 



EAST COAST MARINE SHELLS 



Family Luclnldae 



Shell usually white; umbones de- 

 pressed; edge smooth or minutely crenulat- 

 ed. 



Foot of animal often twice the 

 length of shell but folded back upon it- 

 self and concealed between the gills. 



GENOS LUCINA Brugulere 1797; 

 Phacoides, Gray 1824 



LUCINA PENNSYLVANICA Llnne. Pennsylvania 

 Luclna. Shell Inflated, solid; high sharp 

 umbones tiorned forward; epidermis raised 

 into numerous elevated laminae; color 

 white throughout but old individuals brown- 

 ish. Diam. 2 Inches. 



The beautiful light brown epidermis 

 Is peculiar and characteristic of this Lu- 

 clna. It may be recognized by touch. 



PI. 15, Fig. 1 



Cape Hatteras, North Carolina to 



Florida; West Indies 



LUCINA JAMAICENSIS Lamarck (L. pecLinatus 

 Gmel.). Jamaica Lucina. Shell scarcely 

 inflated, rather solid, sculptured with va- 

 riable ridges; muscle scars narrow, long 

 and rather smooth; color dirt white or pale 

 salmon both inside and out. Diam. 2 inch- 

 es. 



A shallow water shell, quite fre- 

 quent in Florida waters. 



PI. 16, Fig. 1 



St. Augustine, Florida to West 



Indies; Uruguay 



Si:.CTION CAVILUCINA Fischer 1887 



SUBGENUS LUCINISCA Dall 1901 



LDCINA NASSULA Conrad. Woven Luclna. Sur- 

 face beautifully sculptured with about 

 twenty raised concentric lines and a larg- 

 er number of radiating ribs; tooth-like 

 projections upon surface recognizable by 

 touch; margin of shell crenulated. Length 

 11 mm. 



It was taken by the writer at San- 

 Ibel and in Lake Worth, Florida, in quite 

 shallow water. The usual depth reported 

 is from. 7-200 fathoms. 



PI. 16, Fig. 8 



Cape Hatteras, North Carolina to 



Cuba and west to Mobile, Alabama 



LUCINA MURICATA Spengler (l. scabra Lam.). 

 Scaly Lucina. Concentric sculpture very 

 indistinct; numerous spinous radial ribs; 

 right anterior cardinal tooth obsolete. 

 Length 18 mm. Depth range 6-12 fathoms. 



The very striking radial ribs sep- 

 arate this species from all others of the 

 group. 



PI. 15, Fig. 3 



Florida Keys and West Indies 



SUBGENUS PSEUDOMILTHA Fischer 1887 



LUCINA FLORIDANA Conrad, Florida Lucina. 

 Siirface with ro\agh concentric growth stag- 

 es and pale epidermis; shell also much com- 

 pressed and heavy. Diam. 34 mm. 



PI. 15, Fig. 2 



West coast of Florida to Texas 



SUBGENUS LUCINOMA Dall 1901 



LUCINA FILOSA Stlmpson. Shell compressed, 

 white, thick; hinge margin straight; um- 

 bones small, extending forwards over a 

 small smooth lunule; numerous separated 

 raised concentric ridges, between these 

 rounded thread-like lines; sometimes mi- 

 nute radiating lines; cardinal tooth in 

 left valve; no marginal teeth. Length and 

 height 2.5 inches. Depth range 16-528 fath 

 oms. 



A rare deep-water shell. Single 

 valves have been taken upon the beaches 

 after severe storms. 



PI. 14, Fig. 8 



PI. 73, Fig. 14 



Casco Bay, Maine to Cape Florida 



SUBGENUS CALLUCINA Dall 1901 



LUCINA RADIANS Conrad. Rayed Luclna. Con- 

 centric sculpture fine and evenly placed; 

 radial lines faint; exterior scarcely shin- 

 ing; internal margin crenulate; pallial 

 line punctated, muscle scars large; lunule 

 wedge-shaped, shallow. Length 17 mm. Depth 

 range 5-85 fathoms. 



PI. 20, Fig. 10 



Beaufort, North Carolina to Florida; 



Porto Rico 



SUBGENUS PARVILUCINA Dall 1901 



LUCINA CRENELLA Dall. Shell small, rather 

 strongly Inflated, marked with feeble 



