48 BULLETIN 90, UNITED STATES NATIONAL MUSEUM. 



gin, notched in front obliquely by a distinct siphonal sulcus; outer 

 lip subvaricose, with about a dozen internal lirae ; pillar lip thinner, 

 free from the body, sharp-edged, with three well-marked plaits, the 

 posterior most prominent. Length of shell 20, of last whorl 14, of 

 aperture 11, maximum diameter 12.2 mm. 



Tampa silex beds at Ballast Point, Tampa Bay, Florida. U. S. 

 Nat. Mus. No. 165042. 



The original specimen collected by me being quite defective, it 

 was thought best to fully describe the species anew, from a beauti- 

 fully preserved specimen in the Post collection. It belongs to the 

 section Bivetopsia Jousseaume, 1888. 



CANCELLARIA DEPRESSA, new species. 



Plate 10, fig. 4. 



Shell short, turbinate, solid, with about four well-rounded whorls ; 

 nucleus defective ; suture deep, not channeled, the whorl in front of 

 it narrowly tabulate; axial sculpture of (on the last whorl about 15) 

 narrow, rounded, more or less unequal, riblets, which extend from 

 the suture, slightly swollen at the angle of the shoulder, to 

 the rounded margin of the umbilical funnel, wdth usually 

 subsequent interspaces; the incremental lines are also rather 

 coarse and prominent; all the axial sculpture is slightly retrac- 

 tive; spiral sculpture of (at the beginning of the last whorl 

 about 10) subequal and mostly subequally spaced, flattish threads 

 with wider interspaces, overriding the ribs, but not notably swollen at 

 the intersections; near the periphery a few of these are alternately 

 smaller and closer, there are also two or three finer threads between 

 the shoulder and suture; umbilicus large and deep, funicular, with 

 spirally threaded walls; aperture subtriangular, the margin contin- 

 uous ; body with a rather thick smooth layer of callus ; outer lip with 

 a small subsutural internal liration, and about 8 more lirae between 

 the shoulder and canal; margin sharp oblique with a moderately 

 swollen external varix; canal short, narrow, shallow; pillar-lip 

 smooth with three plaits, enlarging posteriorly. Height of shell 

 17.5, of last whorl 14.5, maximum diameter 12 mm. 



Tampa silex beds, at Ballast Point, Tampa Bay, Florida. One 

 specimen from the Post collection, U. S. Nat. Mus. No. 165043. 



This also belongs to the section Bivetopsia Jousseaume. 



CANCELLARIA (SVELTIA), sp. indet. 



Tampa silex beds at Ballast Point, Tampa Bay, Florida. One 

 specimen, U. S. Nat. Mus. No. 165044. 



The specimen is immature with the base defective. It has 5 

 whorls with a pronounced suture; about 12 rounded ribs crossed on 



