THE NAUTILUS. 99 



Greatest breadth at base 22 mm., height 6 mm. 



Locality : On the Chickasawhay River, three and one-half miles 

 below Quitman, Miss., below the 0. sellceformis bed, Claibornian. 



This species differs from any Tertiary species known by the very 

 thin shell in comparison with its size, and its very fine cancellation. 

 The interior is filled with matrix. 



OVULA SYMMETRICA n. Sp. PI. Ill, fig. 10. 



Shell smooth exteriorly, spire produced, pointed and slightly spat- 

 ulate, outer lip reflected, margined on the interior with numerous 

 crenulations, and curved from spire to base. Aperture narrow, the 

 inner margin of same denticulated near the spire and with three or 

 four folds at base. 



Length of figured example 9 mm. 



Localities : McLeod's Mill and on the banks of the Chickasawhay 

 River, three and a half miles below Quitman, Miss.; close to the 

 Wautubbee beds of the Claibornian. This species differs from both 

 0. subtruncata and 0. texana of Johnson, and it has been kindly 

 compared with the types by C. W. Johnson. 



The specimen from the bluff" below Quitman is broken, but if per- 

 fect would be about 13 mm. in length. 



LATIRUS ELABORATUS n. sp. PI. Ill, figs. 11, 12. 



Shell small, whorls nine, the first three smooth, the fourth partly 

 so, the balance nodular and crossed by spiral lines, the lines faint on 

 the upper part of each whorl, becoming coarser below and developing 

 plaits at the top of the transverse nodes; the younger whorls hare 

 two coarse spiral lines about their centre. 



Suture irregular, closely appressed. Outer lip nodular within, the 

 pillar lip smooth with the exception of two slight raised plaits about 

 the centre of the aperture within ; canal produced and but slightly 

 curved. 



Length of the largest specimen 11 mm., breadth 4| mm. 



Localities : Matthew's Landing bed, at C. Jones, Wilcox Co., Ala., 

 and in the Black Bluff" clays near Grave Yard hill, Ala. The figures 

 are of a small specimen and do not show the two plaits on the pillar 

 lip because they are too far within the aperture. 



ANOMIA NAVICELLOIDES Aldr. PI. IV, figs. 13, 14. 



For description see THE NAUTILUS, Vol. XI, p. 97, January, 1898. 



