MOLLUSCA OF PORTO RICO. 
413 
Scala retifera Dali. 
Scala ( Acr ilia ) retifera Dali, Blake Report, Gastropoda, p. 312, 1889; Bull. 37, U. S. Nat. Mus.,p. 124, 1889. 
Mayaguez, Porto Rico, at station 6062, one specimen; also north to Cape Hatteras, North Carolina. 
Superfamily GYMNOGLOSSA. 
Family EULIMIDtE. 
Genus EULIMA Risso, 1826. 
Section ETJLIMA s. s. 
Shell imperforate, subulate, with many flat, whorls, polished; spire often turned to one side, 
obscurely marked down one side with a series of traces of varices, which form ribs internally; aperture 
oval, pointed above; lip simple or slightly thickened; operculum horny, paucispiral; nucleus excentric. 
Eulima oleacea Kurtz & Stimpson. 
Eulima oleacea Kurtz & Stimpson, Proc. Bost. Soc. Nat. Hist., iv, p. 115, 1851. 
Eulima intermedia Jeffreys, Brit. Conch., iv, p. 103, v, p. 214, pi. lxxvii, fig. 4. 
Shell small, rather narrow, nearly straight, with eleven or twelve flat whorls; suture very faintly 
marked; aperture ovate, sharp above; lip well produced in the middle; columella slightly reflected, 
produced into a callus on the parietal wall. Color milky white, with a semitransparent band at the 
suture, glossy. 
Length, 5; diameter, 1.25 mm. 
Mayaguez, two shells and a fragment. 
Eulima conoidea Kurtz & Stimpson. 
Eulima conoidea Kurtz & Stimpson, Proc. Bost. Soc. Nat. Hist., iv, p. 115, 1851. 
Eulima conoidea Tryon, Man., vm, p. 273, pi. lxix, fig. 40, 1886. 
Shell with twelve or thirteen slightly rounded whorls, nearly straight, moderately stout; last 
whorl sometimes faintly subangulate at the base; outer lip scarcely thickened, well advanced in the 
middle; aperture subrhomboid. Color shining white, the upper whorls sometimes flesh-colored. 
Length, 8; diameter, 2 mm. 
Puerto Real; Mayaguez, Porto Rico; three shells. 
Subgenus Leiostkaca H. & A. Adams, 1853. 
Shell slender, polished, often ornamented with spiral colored bands, with a succession of slight 
varices on each side of the spire, not always apparent; aperture long, narrow. 
Eulima patula n. sp. Plate 57, fig. 3. 
Shell small, translucent white, with a rapidly diminishing spire, blunt at the extreme tip, but 
otherwise acute, the sides nearly rectilinear or even slightly concave; whorls about nine, the earliest 
ones slightly inflated; last whorl much the largest, the aperture large, pillar straight, outer lip nearly 
straight and, as it were, slightly pressed in at the periphery; the anterior part of the aperture very 
patulous. 
Length, 4.5; maximum diameter, 1.5 mm. 
Station 6062, Mayaguez Harbor, Porto Rico, five specimens. 
Eulima acuta Sowerby. 
Eulima acuta Sowerby, P. Z. S., 1834, p. 8. 
Eulima acuta Tryon, Man., vm, p. 280, pi. lxx, fig. 82, 1886. 
Shell slender, straight, with about ten flat whorls, the suture barely discernible as a line; aperture 
long-ovate, slightly patulous; outer lip scarcely thickened, not advanced in the middle. Color white, 
sometimes showing one or two pale yellow bands. 
Length, 5; diameter, 1 mm. 
Mayaguez, Porto Rico, a half dozen specimens. 
