118 PROCEEDINGS OF THE ACADEMY OF [1895. 



Venericardia planicosta Lam., Cytherea texacola 

 Harris, Clavilithes regexa Harris, n. sp. , Phos 

 texana Gabb. var. , Distortio septemdentata 

 Gabb. , Scala, Natica arata Gabb., N. limula 

 var., Sigaretus deelivis Con., Calyptrophorus 

 velatus Con. Turritella nasuta var. houstonia 

 Harris, T. nasuta Gabb., Belosepia ungula 

 Gabb., and tbe corals Oceulina Heilpr., Turbl- 

 nolia pharetra Lea, Trochosmilia mortoni Gabb 

 and Horn, and Endopachys maclurii Lea. A 

 number of fish teeth also occur in this bed . . 15 feet 

 Going north from the Hurricane Bayou localities we find fossili- 

 ferous indurated brownish-yellow and green marly sands at Han- 

 uon's mill, and on the Murchison prairie and eastward. A section 

 of Murchison prairie shows : 



1. Black soil 1 to 2 feet 



2. Brownish- yellow altered green sand 4 feet 



3. Brown sand containing Ostrea alabamensis Lea, 



Ostrea sellceformis var. divaricata Lea, Pecten des- 

 hayesii Lea, Cerith ium vinctum Whitf. , Venericar- 

 dia alticosta var. perantiqua Con., Venericardia 

 planicosta Lam., and Cytherea texacola Har- 

 ris, Volutilithes petrosa var. indenta Con., Cor- 

 nulina armigera Con 4 feet 



4. Bluish green marly sand indurated and containing 



similar fossils to No. 3, as well as Corbula al- 

 drichi var. smiihvillensis Harris, ( 'rassatella tex- 

 ana Heilpr., Crassatella trapaquara Harris, and 



( )/therea texacola H 10 feet 



Still farther north, at Elkhart, the same section appears. A 

 section at Elkhart wells shows : 



1. Brown and black plastic clays containing irony 



pebbles, silicified wood and calcareous nodules . 10 feet 



2. Gray and yellow brown clays in thin laminae ... 5 feet 



3. Dark brown altered green sand with fossil casts . 1 foot 



4. Gray laminated plastic clays 3 feet 



5. Green sand, hard for eight or ten inches, full of 



shells and interbedded with greenish Mack clay 4 feet 

 This bed, No. 5, contains Plicatula filamentosa Conrad, Pimm sp., 



