MOLLUSCA OF PORTO RICO. 
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Genus RANULARIA Schumacher, 1817. 
Shell pyriform; spire short; canal long, straight or curved. 
Ranularia tuberosa Lamarck. 
Triton tuberosum Lamarck, An. sans Vert., vn,p. 185, 1822. 
Triton antiltarum d’Orbigny, Moll. Cubana, ii, p. 161, pi. xxm, fig. 20, 1845. 
Shell rather short, with a moderate spire and recurved canal; whorls slightly rounded, the 
last ascending, sculptured with irregular, nodulous ribs, which are lirate in the interstices and are 
somewhat longitudinally plicate at the upper part of the shell and wrinkled below; there is often a 
strong hump on the back of the body whorl and one or two minor humps; outer lip varicose, toothed 
within; inner lip spreading in a wide callus over the base of the shell. Color dirty white, faintly 
marked with brown, sometimes brown banded; aperture white, rich reddish brown within. 
Length, 55; diameter, 30; length of canal, 18 mm. 
Mayaguez, Porto Rico; Ensenada Honda, Vieques, young shells; Indo-Pacitic and West Indian 
regions. 
Genus LAMPUSIA Schumacher, 1817. 
Lampusia pilearis Lamarck. 
Triton pileare Lamarck, An. sans Vert. , vn, p. 82, 1822. 
Triton pileare Kiener, Icon. Coq. Viv., p. 15, pi. vn, fig. 1. 
Shell with somewhat rounded whorls, which are often irregularly turned, sometimes with a row 
of nodules on the periphery, sculptured with finer and coarser revolving ridges, which are crossed by 
rather faint longitudinal ribs; outer lip heavy, toothed or strongly ridged within; columellar area 
strongly wrinkled, ridged; canal moderate, usually reflexed. Color tawny to dark brown, usually 
more or less white banded, sometimes having longitudinal dark flames; aperture varying from tawny 
to deep red or red brown, the teeth and folds whitish. The ground of the upper part of the inner lip 
is often blackish. 
Length, 13G; diameter, 55 mm. 
Mayaguez Harbor; San Juan, Arroyo, Porto Rico. 
An abundant and variable species distributed throughout the West Indian and Indo-Pacitic 
regions. 
Lampusia chlorostoma Lamarck. 
Triton chlorostomum Lamarck, An. sans. Vert., vn, p. 185, 1822. 
Triton chlorostomum Kiener, Icon. Coq. Viv., p. 19, pi. xii, fig. 2. 
Shell with shouldered, often irregularly turned whorls, with sculpture much like that of T. pileare, 
but with stronger, more nodulous longitudinal ribs, often decidedly humped behind on the body whorl; 
varices strong; outer lip very heavy; aperture small, usually with a double row of teeth within; inner 
lip wrinkled, plaited; canal moderate, recurved. Color dirty white to reddish ash, faintly variegated 
with brown, the aperture reddish. 
Length, 90; diameter, 40 mm. 
Arroyo; Ponce Reefs; Mayaguez; San Juan, Porto Rico; West Indian and Indo-Pacitic regions. 
Another abundant and variable species, with a distribution over the same area as the last. It has 
a more distinctly angled shoulder, heavier varices, stronger longitudinal knobbed ridges, and a 
smaller aperture than the T. pileare, though the two have many characters in common. 
Lampusia cynocephala Lamarck. 
Triton cynocephalmn Lamarck, An. sans Vert., vn, p. 184, 1822. 
Triton cynocephalus Reeve, Conch. Icon., n, pi. vm, fig. 26, 1844. 
Quebradillas; San Juan, Porto Rico (Gundlach); West Indies; Indo-Pacitic region. 
Genus L0T0RIUM Montfort, 1810. 
Lotorium femorale Linnseus. 
Murex femorale Linnasus, Syst. Nat., ed. x, p. 749, 1758. 
Triton femorale Reeve, Conch. Icon., ii, pi. vii, fig. 22, 1844. 
Mayaguez; Quebradillas; San Juan, Porto Rico (Gundlach) 
F. C. B. 1900—27 
