BEEDE: UPPER PERMIAN RED BEDS. 171 



NATICELLA TRANSVERSA, n. sp. 



Plate VIII, figures 1, la. 



Shell small, spire low, whorls about three, rapidly enlarg- 

 ing. The spire is much appressed, rising but slightly. The 

 upper whorls form but a small fraction of the height of the 

 shell. The suture is strongly impressed, and just beneath it 

 the shell is nearly flat and smooth for a very short distance, 

 when it turns down abruptly with an angulation, below 

 which the entire shell is ornamented with transverse ribs 

 very equally spaced. They are about their own width apart, 

 slightly keel-shaped, with rounded valleys between. Height 

 of shell and greatest diameter about equal, 4 mm. 



Dozier, Tex. ; rare. 



This species has a superficial resemblance to Naticella costata 

 (Munst.), from the Triassic of St. Cassian, on the one hand 

 and remotely to a species from the Kansas Pennsylvanian on 

 the other. The generic reference is provisional. It also has 

 a very strong resemblance to Narica lyrata (Phill.), from 

 Belgium and England, but is a very different species. Atten- 

 tion should also be called to its resemblance to Littorina bise- 

 rialis Phillips, as figured and described by Murchison, de 

 Verneuil and Keyserling from the Urals of Russia. It differs 

 very sharply from these shells in the relative height and form 

 of the body whorl. It is to be remembered that our specimen 

 only shows superficial characters, and that there is a great 

 stratigraphic interval between the horizon of the European 

 and American shells. 



PLAGIOGLYPTA?? sp. 



Shell minute, shaped like Dentalium and allied shells. The 

 diameter at the larger end is about f mm. It was ornamented 

 with comparatively coarse annulations. The specimen is too 

 fragmentary to admit of specific determination or correct gen- 

 eric reference. 



Dozier, Tex. ; very rare. 



