FAUNA OF ORTHAULAX PUGNAX ZONE. 37 



CONUS PLANICEPS Heilprin. 

 Plate 6, figs. 1, 2. 



Conus planiceps Heilpbin, Trans. Wagner Inst., vol. 1, p. 110, fig. 48, 1887. — 

 Dall Trans. Wagner Inst., vol. 3, pt. 1, p. 25, pi. 11, figs. 5, 5a, Aug., 

 1890 ; pt. 2, p. 219, 1892. 



Tampa silex beds at Ballast Point, Tampa Bay, Florida ; also from 

 silicified rock at Martin Station about 12 miles North of Ocala, 

 Florida; Willcox. The specimen figured is U. S. Nat. Mus. No. 

 165029. 



The species has also been found at Bailey's Mill Creek sink, in 

 Jefferson County, Florida, about 3 miles southwest of Lloyd's station 

 on the railway. Here the fossils occur in the form of siliceous 

 pseudomorphs, as at Ballast Point, in a sort of clay overlying a bed 

 of limestone, with a number of other species common to the Tampa 

 silex beds. 



CONUS ILLIOLUS, new species. 



Plate 6, figs. 3, 5. 



Shell solid, slender, elongate, turrited, of about 9^ whorls; 

 nucleus small, bulbous, of about 1 whorl, smooth and oblique; 

 suture distinct; the shoulder of the whorl sharply keeled, the 

 space between it and the suture slightly excavated, with two 

 feeble spiral threads equidistant from each other, the suture, 

 and the keel ; excavated space transversely sculptured with numerous 

 concavely flexuous, equal, close-set, slightly elevated incremental 

 lines ; suture meeting the whorl behind at nearly a right angle some 

 distance below the keel ; axial sculpture, beside that above mentioned, 

 comprising a series of very small, short, subequal, and nearly equi- 

 distant folds on the whorl just below the keel, with subequal inter- 

 spaces, which do not nodulate the keel and are stronger on the earlier 

 whorls and nearly obsolete on the last whorl; these are crossed by 

 two or three feeble spiral threads with narrower intervals, below 

 which the spiral sculpture is obsolete and the surface practically 

 smooth for two-thirds the length of the whorl; the anterior third 

 has rather coarse spiral threading of which the first 10 are paired, 

 the anterior 10 being coarser and equidistant, aperture narrow, 

 outer lip (defective) ; pillar straight, the anterior edge a little promi- 

 nent and twisted. Length 41.5, breadth at keel 17 mm. 



Tampa silex beds at Ballast Point, Tampa Bay, Florida. Type- 

 specimen from the Post collection, U. S. Nat. Mus. No. 165030. 



CONUS DESIGNATUS, new species. 



Plate 6, fig. 4. 



Shell of moderate size with low, broadly conical spire of about 8 

 whorls ; nucleus prominent, subglobular, inflated, smooth ; subsequent 



