TRANSACTIONS OF WAGNER 

 I^IO 



'^ TERTIARY FAUNA OF FLORIDA 



Genus Halicardia Dall, 1895. Type Alytiliiiicria flcxuosa Verrill and Smith. 



For full description see Proc. U. S. Nat. Mus., xvii., No. 1032, pp. 697- 

 703. 1895. 

 Genus Lyonsiella Sars, 1872 i^-\- Lavicordia Seguenza, 1876). Type L. abys- 



sicola Sars. 

 Genus Mytilimeria Conrad, 1838. Type M. Nnttallii Conrad. 



Up to the present time only two species of Verticordia were known from 

 our Tertiaries ; the first was discovered by Emmons in 1858 and the second 

 by Langdon in 1886. Owing to their rarity some confusion has prevailed with 

 regard to these species which I have endeavored to clear up, at the same time 

 adding a number of new species to the list. 



Verticordia eocenensis Langdon (em.). 



Plate 42, Figures 13, 14. 



Verticordia eocensis Langdon, Am. Journ. Sci., xxxi., p. 208, March, 1886; Aldrich, 



Bull. Ala. Geol. Survey No. i, p. 40, pi. vi., fig. 13, 1886; Vaughan, Bull. U. S. Geol. 



Surv. No. 142, p. 46, 1896. 

 Verticordia eocense? Harris, Bull. Pal., i., p. 185, pi: vi., fig. 16, 1896. 



Midway Eocene of Wilcox County, Alabama, Harris; lower Claibornian 

 of Louisiana at St. Maurice, Vaughan ; Claiborne sands below the Scutella bed 

 at Claiborne, Alabama, Langdon and Schuchert ; Wahtubbee Hills, Clarke 

 County, Mississippi, Burns ; Jacksonian of Montgomery, Louisiana, Vaughan. 



This belongs to the typical section of the group and has from thirteen to 

 sixteen ribs, a minutely granulose surface, moderately convex valves, and is 

 well figured by Aldrich as above noted. The interspaces between the ribs 

 usually show one or two impressed lines radiating in harmony with the ribs. 

 The pallial line has a distinct but shallow sinuation. 



Since the above was written Aldrich has described and figured (Nautilus, 

 xvi., p. 100, Jan., 1903) Verticordia Dalliana from the Eocene of Alabama and 

 V. sotoensis {op. cit.) from the Claibornian of De Soto, Mississippi. Both are 

 rather near V. eocenensis. 



Verticordia (Haliris) mississippiensis Dall. 



Plate 42, Figure i. 

 Verticordia {Haliris) mississippiensis Dall, Trans. Wagner Inst., iii., p. 1198, pi. xlii., 

 fig. I, 1900. 

 Eocene of the Wahtubbee Hills, Clarke County, Mississippi ; Burns. 



