38 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 73 



Vaca Keys; Long Island; Key Largo; Angelfish Key; Sands 

 Key ; Northwest and Middle Cape Sable ( ? ) near Flamingo ( ? ) . 



A fine, usually solid, somewhat porcellanous form which generally 

 has the last whorls slightly flattened in the middle but well shoul- 

 dered. It constantly differs from capensis in being less elongated 

 and having a convex spire. I am not quite certain about the main- 

 land specimens. 



LIGUUS CRENATUS CAPENSIS Simpson 



Plate 3, fig, 9 



1920. Liffuus crenatus capensis Simpson, Proc. Biol. Soc. Washington, vol. 33, 

 p. 122. 



Shell large, solid, much elongated, with straight sides and some- 

 what chalky texture; whorls slopingly flattened; sutures not very 

 deep; surface white or slightly greenish tinted on the last whorl, 

 with a few to several spiral lines on the last or last two whorls, 

 those above the periphery green and the basal ones ashy brown; 

 aperture small, rather short, the outer lip not greatly oblique; 

 columella generally thin and straight or only slightly twisted. 



Length of type 58, diameter 27 mm. ; length 60, diameter 26 mm. 



Northwest, Middle, and East Cape Sable; hammock near Fla- 

 mingo; near Cuthbert Lake 20 miles east of Northwest Cape Sable 

 (Livingston). 



More elongated than any other Florida Liguus, with very straight 

 sides and ashy brown basal lines. A specimen found on Northwest 

 Cape Sable in 1885 had a broad, brilliant green belt above the 

 periphery, but it fell into the grass and was lost. The green lines 

 are often worn away on living shells. 



LIGUUS CRENATUS MATECUMBENSIS Pilsbry 



Plate 3, fig. 4 



1912. Liguus crenatus ■maiecum'bensis Pilsbry, Journ. Acad. Nat. Sci. Phila- 

 delphia, ser. 2, vol. 15, p. 446, pi. 37, figs. 5, 5a. 



Shell medium to large, rather thin to subsolid, varying from some- 

 what slender to inflated, with but slightly rounded whorls and a faint 

 angulation just below the periphery, creamy white to pale greenish 

 yellow with a few spiral green or bronzy lines on the last whorl or 

 two, spire rounded; aperture large, rather long; outer lip oblique; 

 columellar area creamy to yellowish; there is sometimes a golden 

 flush on the parietal wall; columella thin and incurved. 



Length 55, diameter 29 mm. 



Length of a slender shell 50, diameter 23 mm. 



Upper Matecumbe Key; Middle and East Cape Sable; Flamingo 

 and hammocks in the vicinity; east to Madeira Bay. Very abun- 

 dant on the mainland. 



