416 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Superfamily T^NIOGLOSSA. 
Family SEPTID4}. 
Genus DISTORTRIX Link, 1807. 
Shell subturriculated, with cancellated sculpture; whorls irregularly turned and distorted; last 
whorl ascending the spire; outer lip wide and flattened; inner lip developed into a broad callus, which 
extends well up on the spire and to the base of the shell, showing the cancellated sculpture; the 
remains of these calluses and the outer lip form varices on the shell; aperture grimaced, the lip 
strongly toothed within; columella strongly curved, somewhat S-shaped, the lower part toothed; canal 
reflexed. 
Distortrix reticulata Link. 
Distortrix reticulata Link, Beschr. Rostock Samml., in, p. 122, 1807. 
Triton clathratum Lamarck, An. sans Vert., vii, p. 186, 1822; Enc. M6th., pi. 413, fig. 4. 
Shell covered with a pale epidermis, sometimes having bristly hairs on the ribs; varices faint and 
appressed, showing the groove behind the former lip; surface cancellated by rather delicate longitudinal 
ribs crossed by revolving ridges; callus (including the lip) triangular; outer lip finely toothed within, 
with a few stronger teeth above; canal somewhat lengthened, slightly reflexed, whitish or brownishi 
the lip and callus whitish or buff color, sometimes a little variegated. 
Length, 80; diameter, 40 mm. 
Mayaguez. 
Distortrix reticulata var. clathrata Dali. 
Distortrix var. clathrata (Lam.) Dali, Blake Report, p. 222, 1889. 
Two very young, somewhat worn shells were dredged at Mayaguez, which may be this variety. 
Genus GYRINEUM Link, 1807. 
Shell oval or oblong, compressed, nodulous, with two rows of varices opposite each other; 
aperture oval or elliptical, witha sulcus above; outer lip toothed, inner lip wrinkled; basal canal short, 
generally reflexed; operculum horny. 
Gyrineum cruentatum Reeve. 
Ranclla crucntdta Reeve, Conch. Icon., ii, pi. v, fig. 20, 1844. 
Shell short, solid, with revolving tubercled ridges, that on the periphery being strongest, the one 
immediately below it quite prominent; below r the suture there are faint, irregular plications; upper 
canal small, not carried much upward; aperture elliptical, the inner lip with scattered plications; canal 
slightly reflexed. Color whitish, irregularly spotted and blotched with reddish brown; aperture white 
or purple, often with reddish maculations between the plicse on the parietal wall. 
Length, 40; diameter, 30 mm. 
One young specimen with purple aperture was obtained at Mayaguez Harbor. 
Genus SEPTA Perry, 1811. 
Shell oval, oblong or elongated, solid, furnished with scattered varices; outer lip thickened, 
toothed within; columella with numerous plications; canal long or short. 
It is Triton Montfort, 1810, not Linnaeus, 1758; and Trilonium Cuvier, 1817, not Muller, 1776. 
Septa tritonis var. nobilis Conrad. 
Triton nobilis Conrad, Journ. Acad. Nat. Sci. Phila., 2d ser., I, p. 212, 1849. 
Triton variegatus var. Reeve, Conch. Icon., n, pi. I, fig. 3a, 1844. 
Porto Rico, various localities (Gundlach). 
The variety nobilis is a shorter, heavier, more shouldered form than the type, which comes from 
the Indo-Pacifie region. 
Genus COLUBRARIA Schumacher, 1817. 
Shell elongated, axis usually arcuate; aperture small; canal short. 
Colubraria lanceolata Menke. 
Ranella lanceolata Menke) Sy n. , p. 87, 1828. 
Triton lanceolatus Reeve, Conch. Icon., n, pi. xvnr, fig. 79, 1844. 
San Juan, Porto Rico (Gundlach). 
