898 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
ridges of various sizes, separated by concave furrows, or the surface may be scarcely marked by narrow, 
widely spaced grooves; the sculpture is stronger just below the suture, where it always becomes 
slightly nodulous, and on the base of the shell; spire of moderate height; aperture elongate-oval, the 
outer lip lirate within and marked on its inner edge with dark lines, which are often elevated into 
slight ridges and end in toothlike projections; canal of moderate length, slightly reflexed, open; 
columella incurved, with two or three folds below. The color pattern is variable. It is sometimes 
ash colored, overlaid with irregular, dull-brown markings and blotches, which may be disposed in 
faint wide bands. In other specimens the ground is nearly white, with blotches and cloudings of pale 
chocolate, salmon, or reddish, the revolving furrows being marked with darker color. 
Length, 150; diameter, 65 mm. 
Guanica; Ponce Reefs; Hucares; San Juan; Fajardo; Boqueron Bay, Porto Rico; Southeastern 
States; West Indies; Mexico and Central America. 
The specimens living in brackish water are more strongly sculptured, duller colored! and rougher 
than those found living on open beaches, and are probably worthy of a varietal name. The species is 
larger than the allied F. distans, with which it has been sometimes confounded, and is always somewhat 
sculptured below the suture, while distans is not. As in the case of the Strombus pugilis, the more 
southeastern the locality the more pale the salmon coloration which characterizes the shell. 
Genus LATIRUS Montfort, 1810. 
Shell turriculated or oval fusiform; aperture oval-oblong; outer lip lirate within; columella with 
two or three faint folds below. Operculum oval-elongated, unguiculate, arcuate, concave at the 
columellar border; nucleus apical. 
Subgenus Leucozonia Gray, 1847. 
Shell oval-fusiform, carinated, spire moderate, canal rather short; columella subflLexuous. 
Latirus cinguliferus Lamarck. 
Turbinclla cingulifera Lamarck, An. sans Vert., vn, p. 107, 1822. 
Turbinclla cingulifera Reeve, Conch. Icon, iv, pi. m, fig. 17, 1847. 
Shell solid, with a moderately developed spire and having about eight whorls. The form and 
sculpture of the whorls vary remarkably. In some cases there is a revolving row of strong tubercles 
on the middle of the whorls, which forms a well-marked shoulder on the body whorl; in other cases 
the shell is absolutely destitute of nodules and the whorls are slightly rounded, and there is every 
possible variation between these extremes. The growth lines are strong and irregular, and the surface 
is covered with faint, revolving threads, so that it is more or less reticulated. The aperture is 
elliptical; the outer lip is generally lirate within, though sometimes it is nearly smooth. Above 
the base there is usually a sort of revolving ridge which ends in a small tooth or projection on the 
outer lip. The canal is rather short and recurved; the columella bears about four faint plaits, and 
the shell is often falsely umbilicate at its base. Color light brown to nearly black. There is generally 
a narrow, white band on the ridge just above the base. 
Length, 55; diameter, 80 mm. 
Guanica; Ponce reefs; Playa de Ponce; Cabo Rojo light, Porto Rico; Ensenada Honda, Culebra; 
West Indian region generally. 
Latirus ocellatus Gmelin. 
Buccinuin ocellatum Gmelin, Syst. Nat., p. 3488, 1792. 
Turbinclla ucellata Reeve, Conch. Icon., iv, pi. vra, fig. 38, 1847. 
Shell solid, short, fusiform, with a row of nodules on the middle of the whorls, which becomes 
a strong ridge on the shoulder of the body whorl. There is a small, or secondary, row of nodules in 
the concave space above the shoulder. The surface of the shell is covered with small revolving ridges, 
and between these there are tine raised threads, and these are crossed by the distinctly marked growth 
lines, making the surface reticulate. Outer lip lirate within; canal short; columella with three folds. 
Color dark brown or bluish, the nodules white, and there are often broken white bands on the body 
whorl; aperture bluish white, with a dark-spotted border. 
Length, 27; diameter, 18 mm. 
Caballo Blanco, Vieques, two specimens; Puerto Real, Porto Rico, one shell; West Indian region 
generally. 
