1919.] NATURAL SCIENCES OF PHILADELPHIA. 39 



contracted directly in front of the posterior suture, expanding 

 again away from the suture, quite strongly reflexed and patulous 

 anteriorly. Columella obliquely contracted at the base of the 

 body. Inner lip widely reflexed, fused with the parietal callous. 



Dimensions. — Altitude, 7.5 mm. Maximum diameter, 2.5 mm. 



Type Locality. — Magnolia, Duplin County, North Carohna. 

 Duplin Formation. 



Observations. — Melanella magnoliana is most closely allied, 

 apparently, to Melanella eborea Conrad. It differs from the 

 latter, however, in its rather more slender outline, more numerous 

 whorls in proportion to the altitude, and the more widely 

 reflexed, and patulous anterior portion of the aperture. 



Distribution. — Duplin Formation. Magnolia and the Natural 

 Well, 1^ miles north of Magnolia, Duplin County, North Carolina. 

 Muldrow's Place, 5 miles southeast of Mayesville, Sumter County, 

 South Carolina. Waccamaw Formation. Walker's Bluff, Bladen 

 County, North Carolina. 



Collections. — U. S. National Museum. Johns Hopkins Uni- 

 versity. Academy of Natural Sciences of Philadelphia. 



Strombiformis dalli new species. Plate II, fig. 5. 



Eulima (Lciostraca) rectiuscula Dall, 1890, Trans. Wagner Free Inst. Sci. 

 Philadelphia, vol. iii, pt. i, p. 160 (ex parte). 



General Characters. — Shell imperforate, moderately tall and 

 exceedingly slender. Altitude of body approximately one-half 

 that of the entire shell. Whorls closely appressed, slightly flat- 

 tened dorso-ventrally, feebly constricted at the suture lines, 10 to 

 11 in number. Spire subulate, faintly undulated by the barely 

 perceptible medial convexity of the whorls. Body evenly and 

 very gently curved. Base and aperture very long drawn out. 

 Sutures obscure. 



Protoconch. — Nuclear turns minute, probably 2 in number, 

 differentiated only by their relative inflation. 



Sculpture. — External surface smooth, lustrous. 



Aperture. — Aperture holostomous, sub-ovate, acutely angulated 

 posteriorly. Outer lip approximately vertical, patulous and feebly 

 reflexed anteriorly. Inner lip oblique, reflexed, fused with the 

 parietal callous. 



Dimensions. — Altitude, 9.8 mm. Maximum diameter, 1.95 mm. 



Type Locality. — Caloosahatchie River, Florida. Caloosahatchie 

 Formation. 



