284 TRANSACTIONS OF THE WAGNER FREE 



Cerithium glaphyrea var. litharium Dall. 

 Plate 14, figure 9. 



Pliocene of the Caloosahatchie, Sliell Creek and Alligator Creek, Dall 

 and Willcox. 



This differs from the type by its more prominent and nodular sculpture 

 and somewhat larger size. The variety has two prominently nodulous bands 

 in front of the suture, then a beaded secondary spiral, then another nodulous 

 primary followed by four or five secondaries, including all the basal 

 spirals, which are regularly beaded. The suture is coiled on the posterior of 

 these last, but does not cover it, so the variety has the suture marked by 

 a beaded line behind it. Lon. of figured specimen 19.0; max. diam. 

 6.5 mm. 



This species and its variety are of the group to which C. nmscarum Say 

 belongs, but have not the excavated base of that species. 



Cerithium coccodes n. s. 

 Plate 22, figure 6. 



Pliocene of the Caloosahatchie and Shell Creek, Dall and Willcox. 



Shell acute, with the nucleus decollate and twelve or more subsequent 

 moderately rounded whorls ; varices numerous, about twenty-two in all, dis- 

 tinct, but not very prominent; spiral sculpture of, on the upper whorls, three 

 principal, not-much-elevated, beaded primaries, separated by wider interspaces 

 in which run three simple or somewhat wavy secondary threads, of which the 

 middle one is a little more prominent than the other two. On the last whorl we 

 have the beaded thread next the suture more prominent than the others ; in 

 some specimens the beads become pointed, almost spinose ; in front of this is 

 a smaller, sometimes wavy, elevated line, then three more beaded lines with 

 the intercalary plain threads, then on the base two to four smaller beaded lines 

 and numerous finer threads ; on the upper part of the spire between the varices 

 are small, narrow transverse riblets under the beads, three in each intervarical 

 space, but on the later whorls, except the varices, there is no transverse 

 sculpture ; aperture short, ovate, a well-marked callus and subsutural ridge on 

 the body ; outer lip moderately thickened, faintly striated within in harmony 

 with the sculpture; pillar simple, short, arched ; canal short, recurved. Lon. 

 of shell 31 ; max. diam. 9 mm. 



This species is quite recognizable by its fine, rather sharp, granular 

 sculpture, with no transverse ribbing on the greater portion, and its numerous 

 but not prominent varices. There is no recent species on our coast which is 

 nearly related to it. 



