226 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



Pliocene age, described in the Nautilus ^ a number of the species. 

 His introductory remarks are as follows: 



Some years since Professor S. W. McCallie, State geologist of Georgia, called my 

 attention to a small block of soft marl in the State museum which had a number of 

 shells in it, and at my solicitation the same was kindly foi^warded to me for exami- 

 nation. I found the specimens were a mixture of fresh water and marine, and that 

 the fresh water ones seemed to be new, besides being more or less distorted. The 

 specimens were very fragile. Notwithstanding the greatest care many of the most 

 distorted were badly broken. It is hoped that a future examination will reveal more 

 species and an assortment of forms far greater than those here described. The hori- 

 zon is probably Pliocene, and seems to represent a southern fauna. The exact locality 

 is 4 miles south of Atkinson, Wayne County, Georgia, on the Satilla River. The list 

 of species is as follows: 



1. Rangia cuneata Gray. (Common, rather small.) 



2. Mulinea lateralis Say. 



3. Mulinea congesta Con. 



4. Dosinia sp. ? (Young shells.) 



6. Modiolaria sp. ? 



6. Gemma purpurea H. C. Lea. 



7. Neritina sp. ? (Too poor for identification.) 



8. Neverita sp. ? (Fragments.) 



The new species described were: 



9. Potamides saltillensis. 



10. Potamides cancelloides. 



11. Paludestrina plana. 



12. Amnicola saltillensis. 



13. Amnicola georgiensis. 



14. Amnicola expansilabris . 



15. Planorbis antiquitus. 



It is to be noted that by a typographical error the name satil- 

 lensis, from the Satilla Kiver, was misspelled saltillensis, probably 

 from some confusion with the Saltilla River of eastern Mexico. 



Some of this marl was sent in to the United States Geological Survey 

 by the parties under Dr. T. Wayland Vaughan's direction, who were 

 working on the geology of the coastal plain of the United States, 

 chiefly by Mr. George C. Matson. Part of the material came from 

 the original locality on the Satilla River, Georgia (station 6132), 

 and was collected for Mr. Matson by L. W. Stephenson. The 

 same fauna was recognized in material from a well at the depth 

 of 49 feet in the northeast quarter of section 28, township 3 north, 

 range 2 west, Louisiana meridian, 6 to 8 miles southwest of Alex- 

 andria, Louisiana (station 6040). This locality is known as the 

 Frank Muse place in Rapides Parish, owned by Dr. R. O. Simmons 

 and others. Also from a well of the Producer's Oil Co., Pine 

 Prairie oil field, Louisiana (station 6445). The depth here was 

 given as 1,540 feet, but I accept this with all reserves. Lastly, several 

 localities near Burkeville, Newton County, Texas, were discovered 



» Vol. 24, No. 11, March, 1911, pp. 131-132, continued in the April number, pp. 138-140, with plates 8-10, 



