1919.] NATURAL SCIENCES OF PHILADELPHIA. 37 



Protoconch. — Protoconch not preserved. 



Sculpture. — Axial varices equisize, 8 to the whorl; on the later 

 turns, made up of four heavy lamellse which open up slightly 

 on the medial portion of the whorl, abruptly contracting both 

 vertically and horizontally about midway between the periphery 

 of the whorl and the posterior suture, thus giving to the whorl a 

 somewhat shouldered appearance; varices continuous, fused at 

 the suture line, set somewhat obliquely so that each longitudinal 

 series describes about half a turn around the axis of the shell; 

 intervarical spaces smooth with not even a suggestion of spiral 

 sculpture. 



Aperture. — Aperture entire, sub-circular. Outer lip well rounded, 

 margined by the terminal varix, which, in the type, is equal in 

 size to the other varices of the whorl. Inner lip less strongly 

 rounded than the outer and less hea\'ily enameled. 



Dimensions. — Altitude, 6.0 mm. Maximum diameter, 3.0 mm. 



Type Locality. — Muldrow's Place, 5 miles southeast of Mayes- 

 ville, Sumter County, South Carolina. Duplin Formation. 



Observations. — Though only a single specimen has been pre- 

 served and that a mutilated one, yet the form seems sufficiently 

 distinct to warrant description. The nearest of kin among the 

 Epinonia of the area is, apparently, Epitonium sayana Dall. E. 

 muldrowi may, however, be separated at a glance by the much 

 heavier varices. 



Distribution. — Duplin Formation. Muldrow's Place, 5 miles 

 southeast of Mayesville, Sumter County, South Carolina. 



Collections. — Johns Hopkins University. 



Melanella bartschi new species. Plate II, fig. 1. 



General Characters. — Shell imperforate, straight, quite large for 

 the genus, elongate-conic in outline. Spire subulate, the body a 

 little more than one-third the altitude of the entire shell. Whorls 

 closely appressed, flattened, regularly increasing in size, approxi- 

 mately 15 in number. Body evenly rounded in the adults, more 

 or less obtusely angulated in the young and adolescents. Suture 

 distinct but inconspicuous. 



Protoconch. — Apex broken in all available material. 



Sculpture. — External surface smooth, polished. 



Aperture. — Aperture holostomous, obliquely sub-ovate, moder- 

 ately wide, acutely angulated posteriorly. Peristome not con- 

 tinuous. Outer lip arcuate, feebly contracted directly in front 



