NORTH-CAROLINA GEOLOGICAL SURVEY. 271 



SCALARIA MULTI6TRIATA. (Fig. 164.) 



Shell, small whirls numerous, rather convex and ornament- 

 ed with many sharp longitudinal ribs. 



All the specimens of this species of scalaria which fell under 

 my observation were imperfect at the aperture. Shell marl 

 of Lenoir county. 



SCALARIA CTJRTA. N. S. (Fig. 165.) 



Shell thin and delicate ; whirls about four, ornamented with 

 rather flexuose, sharp, longitudinal ribs. Shell marl of Lenoir 

 county. 



SCALARIA CLATHRTJS. (Fig. 166.) 



All the specimens of this species, when found, were im- 

 perfect. It differs from the preceding in having transverse 

 ribs between the longitudinal ones. 



PETALOCONCHUS . LEA. PETALOCONCHU8 SCULPTtJRATUS. 



(Fig. 169.) 



Shell vermiform, tubular, provided with two longitudinal 

 plates internally ; externally it has nodulose ribs 



IQ ' 169> or costae. The shell is curiously twisted into knots, 

 but sometimes it is rolled up into a coil somewhat 

 conical, as in the figure, after which it is coiled 

 irregularly. It is very common in the miocene 

 marl beds of the State. 



FAMILY LITORINIDAE. LITORINA LINEATA. N. S. 



(Fig. 170.) 



Shell rather small, thick conical ; w r hirls five 

 nearly flat, and the two lower are ornamented with many 

 spiral ridges, which are crossed by obscure lines of growth ; 

 three upper whirls smooth. 



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