beede: upper permian red beds. 169 



Dozier, Tex.; common. Whitehorse spring, Oklahoma; 

 rare. 



This species resembles two species from the Illinois Penn- 

 sylvanian, 0. carhinarium Worthen and 0. salteri Meek and 

 Worthen. It may be distinguished from either species readily 

 enough by its having a heavy revolving ridge just above the 

 suture, and a very faint one below it. The relative depth of 

 the whorl is also less. 



So far as general appearances go it could be compared with 

 Turritella excavata Laube, from the Triassic, from which it dif- 

 fers in having twice the apical angle and in having the promi- 

 nent ridge above the suture rather than below it. 



BULIMORPHA? ALVAENSIS, n. sp. 



Plate VIII, figure 11. 



Shell of moderate size, rather high, sutures distinct. Height 

 of body whorl, 8 mm., next succeeding, S^mm., and the third, 

 2i mm. The apical angle as shown in the cast is about 38 

 degrees. The probable number of whorls is about six. The 

 aperture appears to be semipyriform. Diameter of the base, 

 6 mm. There is somewhat of a shoulder beneath the suture, 

 below which the shell is nearly flat, until the lower portion 

 of the whorl is reached, where it rounds off quite rapidly. 

 The specimen is somewhat compressed in a plane parallel 

 with the axis of the shell. 



Whitehorse spring, Oklahoma ; very rare. 



This species seems to be related to some of the species Bu- 

 limorpha or Machrocheilus from the Kansas Pennsylvanian, but 

 is specifically identical with none of them, so far as the char- 

 acters are exhibited in the cast at hand. The generic refer- 

 ence is provisional. 



CAPULUS ? HAWORTHI, n. sp. 



Plate VIII, figures 12-12&. 



A small shell, the casts of which show no indisputable sur- 

 face or muscular markings. It probably belongs to this or 

 some gastropod genus, as Acmsea. They are obliquely conical, 

 and the bases are pretty regularly elliptical. The height is 

 about 3 mm., length about 5 mm., with the apex 3 mm. from 

 one end. 



Dozier, Tex. ; rare. 



5-Univ. Sci. Bull.. Vol. IV. No. 3. 



