1919.] NATURAL SCIENCES OF PHILADELPHIA. 33 



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

 versity. Academy of Natural Sciences of Philadelphia. 



Anachis anomala new species. Plate II, fig. 3. 



General Characters. — Shell small, heavy, rather stout, fusiform. 

 Volutions o| to 6, slightly convex, narrowly tabulated, rapidly 

 increasing in size. Body smoothly constricted at the base. Aper- 

 ture a little less than one-half the total altitude. Suture line 

 inconspicuous, impressed. 



Protoconch. — Apex somewhat decorticated so that is is impossible 

 to determine all of the characters of the earlier whorls. Proto- 

 conch probably small, smooth, papillate, and pauci-spiral. 



Sculpture. — First whorl of conch apparently smooth; second 

 whorl sculptured with about 16 narrow, rounded, axial riblets 

 which disappear quite abruptly on the penultima. Spiral sculp- 

 ture, for the most part, wanting though faintly impressed lines 

 may occasionally be caught on the second whorl under magnifi- 

 cation and a faint but distinct linear sulcus follows directly behind 

 the suture from the second turn to the last ; two stronger impressed 

 spirals directly in front of the periphery of the ultima; pillar and 

 canal sculptured with 9 straight sided, proximate grooves suf- 

 ficiently deep to be visible with the unaided eye. 



Aperture. — Aperture irregularly elongate. Outer lip straight, 

 somewhat flaring anteriorly, subvaricose, thickened and quinque- 

 denticulate within, — the denticles decreasing in prominence an- 

 teriorly; posterior commissure filled with callous. Labium broadly 

 constricted at the base of the body. Pillar straight, simple, heavily 

 calloused, slightly rugose near the outer margin of the wash, — 

 the rugae corresponding in position to the external sculpture. 

 Canal short, open, slightly recurved, abruptly truncate and broadly 

 emarginate anteriorly. 



Dimensions. — Altitude, 5.0 mm. Maximum diameter, 2.5 mm. 



Type Locality. — Natural Well, Duplin County, North Carolina. 

 Duplin Formation. 



Observations. — Anachis anomala is doubtless a near relative of 

 the protean A. avara of Say. Though very similar in general 

 aspect and outline, the absence of an axial sculpture upon the 

 first and the last whorl is sufficient to readily differentiate it spe- 

 cifically. 



Distribution. — Duplin Formation. Natural Well, 1| miles north 

 of Magnolia, Duplin County, North Carolina. Muldrow's Place, 

 3 



