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FASCIOLARIIDAE 241
iVi inches in length, heavy, squat, with its whorls shouldered by about
9 large nodules. Characterized by its semi-glossy, chestnut-brown color with
a faint, narrow spiral band of whitish at the base of the shell which terminates
into a small, distinct spine on the outer lip. Columella with 4 weak folds
at the base. Aperture yellowish tan within. Common among rocks at low
tide. Alias L. cingulifera Lamarck.
Leucozonia ocellata Gmelin White-spotted Latirus
West coast of Florida and the West Indies.
Plate 1 1 e
I inch in length, 73 as wide, squat and heavy. Color dark-brown to
blackish with a row of about 8 large, white, rounded nodules at the periphery
and about 3 or 4 spiral rows of smaller white squares on the base of the shell.
Base of columella with 3 small folds. Apex usually worn white. A common
intertidal species found under rocks.
Genus Latirus Montfort 18 10
Latirus mcgintyi Pilsbry McGinty's Latirus
Southeast Florida.
Plate lib
/4 to 2/4 inches in length, elongate, heavy, and with about 10 whorls.
Color cream with a soHd yellow-brown periostracum. Aperture bright
yellow. Umbilicus variable, but usually funnel-shaped. Each whorl with
8 low, rounded ribs which are noduled by 2 spiral cords in the upper whorls
and 4 cords on the wide periphery of the last whorl. Numerous fine spiral
threads present. Lower columella with 2 weak folds. Uncommon.
Latirus infundibulum Gmelin Brown-lined Latirus
Florida Keys and the West Indies.
Plate 1 1 a
3 inches in length, heavy, resembling a Fusinus in shape, but character-
ized by the 3 weak folds on the columella, the light-tan to light-brown shell
which bears small, darker brown, wavy, glossy, smooth spiral cords. 7 to 8
strong axial nodules per whorl. Umbilicus imperfect, sometimes funnel-
shaped. Moderately common in the West Indies, rare in Florida.
Latirus brevicaudatus Reeve Short-tailed Latirus
Lower Florida Keys and the West Indies.
Plate I if
I to 2% inches in length, rather broad, with a short siphonal canal, with
8 to 9 rounded, long axial ribs crossed by numerous spiral threads. Color