^43 Miocene Fossils, Olsson 23 



generally with an impressed area in front ; surface smooth, pol- 

 ished with fine incremental growth lines ; mouth round, with 

 a heavy callused columella, behind which is a small umbilical 

 chink ; the umbilicus is faintly outlined by a small spiral line. 



Greater diameter 2.25, height r.50 ni?n. 

 This species is related to the recent shells, placed by Dall in 

 the genus Ethalia, namely reclusa, suppressa and solida, all of 

 Dall, and in order to associate the Miocene species with those 

 shells, I am referring it to the genus Ethalia rather than to Teino- 

 stoma. These two genera have long been incorrectly used judg- 

 ing from their respective types. 



Named for C. P. Alexander of the 2nd Ecphora trip. 



Dziplin formation ; Nahiral Well, N. C. 



Yorktozvn formation; James river, north of Smithfield, Va. 



Molleria harrisi, n.sp,, Plate 3, Fig's 18, 19 



Shell very small, solid, naticoid in shape with a very small 

 spire and rounded whorls ; whorls 2-3 with a moderately large 

 nucleus; whorls solid, rounded, smooth above, with a well-marked 

 suture ; the early whorls are always smooth and generally show 

 but little weathering, the last frequently chalky and eroded ; 

 base with a narrow, deep umbilicus, angulated above and with 

 2, 3 or more spirals, mostly widely spaced above, closer below, 

 descending spirally into the umbilicus ; umbilicus bordered by 

 15 — 20, radially incised lines, extending but a short distance 

 out over the base from the umbilical angle ; last whorl rapid- 

 ly descending ; mouth rounded, angulated at its attachment 

 to the preceding whorl, internal 1 y with a well-marked opercu- 

 late shelf. 



Greater diameter 1.00, height 1.00 mm. 



This appears to be a common and wide-spread species in the 

 upper Miocene. M. harrisi and the following species, may be 

 separated from M. minuscula of the lower Miocene by their sculp- 

 tured bases. M. harrisi has in addition to the spirals which may 

 be either strong or weak, the constant presence of short radially 



