171 Eocene Mollusca 5 



and locality of the type, the same figured herewith. It doubt- 

 less came from a Wood's Bluff outcrop. Length, i^^ inches. 



"Fusus" marnochi, PI. 3, figs. 4, a. 



Syn. F. marnochi Heil., /. c, p. 151, pi., fig. 6. 



The type specimen in the National Museum still remains 

 unique. Its generic position is extremely doubtful. The lines 

 of growth shown by figure 4a correspond very closely 'to those 

 of Eidhria. Dall regards it as a Piisionclla. When more and 

 better specimens are obtained, its generic position can be more 

 accurately determined. Length, four- fifths inch. 



Locality. — Texas: Atascosa county. 



Scala unilineata, PI. 3, figs. 5, a. 



Syn. Scalaria unilineata Heil., /. c, p. 150, pi., fig. 5. 



Described from Jackson, Miss. His specific name is preoccu- 

 pied. Length, ^ inch. 



Eucheilodon creno-carinatus, PI. 4, fig. i. 



Syn. E. creno-carinata Heilp., /. c., p. 150, pi., fig. 4. 



E. creno-carinata var., Har., Proc. Acad. Nat. Sci. Phila., 1896, p. 

 471, pi. 18, fig. 9. 



This species is certainly quite variable in markings and may 

 be equal to E. reticulata Gabb. Length of fragment, i inch. 

 Locality. — Mississippi: Jackson. 



Surcula gabbi, (eroded specimen), PI. 4, fig. 2. 



Syn. 6". gabbi Con., Amer. Jour. Conch., vol. i, p. 142, pi. 11, fig. 5, 1865. 

 Pleiirotoma platysonia Heilp., /. r., p. 150, pi., fig. 3. 

 S. gabbi Har,, Proc. Acad. Nat. Sci. Phila., 1895, p. 56, pi. 4, fig. 5. 



The reason for regarding platysoma as ^S". gabbi is that in 

 working over many specimens of gabbi one finds eroded speci- 

 mens indistinguishable from the form shown by figure 2. Heil- 

 prin gives as locality, Atascoca county, Tex., but precisely the 

 same thing occurs at Smithville. Length, 2 inches? 



Pleurotoma venusta, PI. 4, fig. 3. 



Syn. P. venusta Heilp., /. <:., p. 150, pl., fig. 2. 



Locality, Jackson, Miss. Name is preoccupied, but the form 

 has probably been described as PI. perexilis Aid. Length, 134^ 

 inches. 



