﻿284 CONRAD'S DESCRIPTIONS OF 



A small ivory like species, which, judging from the specimens, is abundant, and 

 the principal fossil in a cohering stratum of grey micaceous sand. 



SOLENOCERAS, Conrad. 



Differs from Ptychocekas, UOrbigny, in the smaller tube lying in a furrow, of the 

 larger one, which is straight only for a short distance from the junction, and then 

 suddenly recurved. 



SOLENOCERAS ANNULIFER. 



Eamites annuh'fer, Morton. Journ. Acad. Nat. Sciences, 1839, Vol. 8, p. 213, 

 pi. 11, fig. 4. 



Locality. — Eufaula, Alabama. Tuomey's collection. 



TURRILITES. 



Turrilites spinifera. Sinistral, conical; ribs numerous, rounded, alternately 

 ending in a sharp spine ; on the angle of the body whirl the spines are erect, those 

 on the spire projecting very obliquely over the contiguous whirl ; umbilicus wide, 

 profound, longitudinally ribbed within. 



Length II inches. Diameter the same nearly. 



Localities. — Eufaula, Alabama. Mr. Tuomey. Tippah Co., Mississippi. Dr. Spill- 

 man. 



This is the first undoubted species of Turrilite I have yet seen from the American 

 strata, and this is very remarkable for its spines, which on the spire lie almost upon 

 the contiguous volution. Tuomey describes a fragment of a species which is 

 described as having a dextral spire. 



Family STROMBWM 

 PUGNELLTJS, Conrad. 



General form of Strombus, with a labrum angular and salient at the upper 

 extremity, with sinus in the upper margin contiguous to the angle or protuberant 

 end of the tip, the outer margin of labrum and submargin very thick or callous ; 

 beak straight or curved forwards. 



This genus embraces four known species, all of which characterize the Cretaceous 

 period. One occurs in South America, and two in India. The latter are Strombus 

 uncatus, Forbes, and S. cortortus, Sow. 



Pugnellus densatus (Strombus.) Journ. Acad. Nat. Sciences, iii., p. 330, pi. 46, 



fig. 31. 



ANCHURA, Conrad. 



Anchura abrupta. PI. 47, fig. 1. Body whirl with a broad revolving rib on 

 a line with the upper extremity of the aperture, with an impressed line on the middle 



