400 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
constriction at the upper part of the shoulder which cuts off the longitudinal ribs and leaves a row of 
nodules. Outer lip thick, varicose, strongly ridged within; inner lip generally having a series of nodu- 
lous plaits, and one strong plait above just below the angle. Color purplish brown, variegated and 
clouded with white, the clouding often in somewhat longitudinal patterns. 
Length, 25; diameter, 15 mm. 
Cabo Rojo Light, Porto Rico, a few worn shells; West Indies; also found on the Florida coast. 
Tritonidea tincta var. bermudensis Dali. 
Trilonidea var. bermudensis Dali, U. S. Nat. Mus. Coll. 
Shell smaller, more slender and delicate than the type and with rather sharper sculpture. 
Boqueron Bay, Porto Rico, one shell; also in Bermuda. 
Tritonidea auritula Link. 
Nassaria auritula Link, Beschr. Rostock Samml., m, p. 124, 1807. 
Buccinum coromandelianum Reeve, Conch. Icon., in, pi. ix, fig. 62, 1846. 
Shell solid, rather short; spire conoidal; whorls slightly rounded, the last with about eleven strong 
longitudinal ribs which are carried up the sjiire; whorls high, shouldered, with the surface concave 
above; the revolving sculpture consists of strong ribs (ten to twelve on the last whorl), and besides 
these ribs there are everywhere intermediate threads that are slightly decussated by the growth lines. 
Just below the suture there is a row of strong nodules. Outer lip varicose,* having a very prominent 
tubercle where the subsutural row ends, strongly ridged within. Columellar area tubercular with a 
strong, deej>, entering plait above. Color brownish, clouded irregularly with white. 
Length, 22; diameter, 15 mm. 
Aguadilla, Porto Rico; Ensenada Honda, Culebra; Caballo Blanco Reef, Vieques; several dead 
shells. 
Though normally quite different from T. tincta, the two forms often approach each other until it 
is difficult to separate them, and each has often been taken for the other. This species is shorter and 
in general solider than tincta; it has a more pronounced shoulder, and the strong tubercle at the upper 
jrnrt of the outer lip is a decided character. 
Tritonidea orbignyi Payraudeau. 
Buccinum orbignyi Payraudeau, Cat. Moll, de Corse, p. 159, pi. vm, figs. 4-6, 1826. 
Shell rather small, with eight whorls which vary from flattened to rounded, covered with longi- 
tudinal rounded ribs (from twelve to fifteen on the last whorl) and numerous revolving ribs, the whole 
being overlaid with revolving threads; outer lip varicose, toothed within; aperture somewhat elongated; 
canal slightly produced ; columella wrinkled. Color brownish yellow with darker markings on the 
back of and between the ribs., with a narrow white band below the periphery 
Length, 18; diameter, 10 mm. 
Ponce, Porto Rico, one shell; Culebra, one young specimen. 
An abundant form in the Mediterranean. 
Genus NASSARINA Dali, 1886. 
Shell with the general characters of Nassaria but more compact, spindle-shaped, and small; 
aperture long, columbelliform, and narrowed below; columellar margin elevated and united above by 
a high callus with the outer lip. 
Nassarina glypta Bush. 
Mangilia? glypta Bush, Trans. Conn. Acad. Sci., vi, p. 461, pi. xlv, figs. 5, 5a, 1885. 
Shell with about, eight whorls which are but slightly rounded, but which are separated by a very 
deep, sharply defined suture; sculpture consisting of rounded longitudinal ribs, and these are cut by 
shallow, revolving grooves into low, irregular nodules; aperture ovate-elongate, narrowed and turned 
back below. Color whitish, with a faint, revolving brown band below the suture and another on the 
base of the shell. 
Length, 3.5; diameter, 1.5 mm. 
Mayaguez, Porto Rico, one worn shell. 
