124 TRANSACTIONS OF THE WAGNER FREE 



FOSSILS FHOM LOCALITIES NORTH OF BALLAST POINT. 



Cerithium Hillsboroensis, nov. sp. Fig. 67. 



Shell elevated, of ten or more volutions; sutures impressed; whorls 

 ornamented with four clearly-defined lines of granulations, the granula- 

 tions of the top series very large, prominent, and somewhat in the form 

 of tubercles ; those of the second line very minute ; moniliform and 

 nearly equal on the third and fourth lines, in some cases those of the 

 third line most prominent, in other cases the reverse ; surface covered 

 with longitudinal, curved creases ; base depressed, with some four or five 

 revolving lines ; aperture ? 



Length, 1.5 inch. 



Of the type of the European Ccritliiuui clcgans, but the moniliations 

 on the lower lines of the whorls are direct, and not oblique, and the 

 number of such lines is also different; the upper granulations are, in 

 addition, comparatively more prominent. 



Very abundant in the rock forming the bed of the Hillsboro River, 

 which is the first example in this country of a true Cerithium bed. The 

 horizon represented is probably the junction of the Oligocene with the 

 Miocene. 



Cerithium cornutum, nov. sp. Fig. 68. 



Shell elevated, rapidly tapering, of about 10-12 volutions; whorls 

 convex, strongly costated, the costae (about seven on the penultimate 

 whorl) oblique and somewhat sigmoidal ; body-whorl with two (or 

 three?) broadly-spreading prominences or horns, one of which is situ- 

 ated obliquely over the aperture, partially bounding the posterior 

 siphonal canal ; aperture oblique, terminating in a short deflected canal ; 

 inner lip broadly-reflected, partially ensheathing the apcrtural horn. 



Length (of imperfect specimen, lacking probably a half-inch, or 

 more), 1.8 inch; diameter of base, .8 inch; length of horn, .3 inch. 



From the Oligocene (?) formation of the Pithlachascootie River, a 

 short distance above the mouth of that stream ; obtained by Mr. Willcox. 

 This form may be readily recognized by its peculiar cornual protuberances. 



Orbitolites Floridanus, Conrad (sp.) 



Am. Journ. Science, new ser., ii, p. 293, as Nummulites (Assilina). 

 Ncmophora Floridana, Conr., Proc. Acad. Nat. Sciences Phila., 17, p. 74, 1865. 

 Crisletlaria? Floridana, D'Orbigny, Prodrome de Paleontologie, ii, p. 406. 



In my paper " On the Occurrence of Nummulitic Deposits in Florida, 

 and the Association of Nummulites with a Fresh-water Fauna " (Proc. 



