88 EOCENE AND LOWEK OLIGOCENE CORAL FAUNAS. 



Louisiana and Texas. It is shorter and thicker than typical Turbinolia 

 pharetra and tlie costte are somewhat sharper. Although some minor dif- 

 ferences can be pohited out, it does not seem possible, in \'iew of the 

 hundreds of specimens that I have examined, to separate it from Turhinolia 



pharetra. 



Localities. — Eoccuc of Alabama, Mississippi, Louisiana, and Texas; 1 mile 



below Shipps Ford, Bastrop County, Texas; Lexington, Lee County, 

 Texas; Bold Mound, 9 miles southeast of Jewett, Texas; Lewis House, 2 

 miles east of Alto, Texas ; Alabama Bluft', Trinity River, Houston County, 

 Texas; Moseleys Feny, Brazos River, Burleson County, Texas; Black 

 Shoals, or Colliers Feny, and Smithville, Texas; Elm Creek, Lee County) 

 Texas ; Gosport, Claiborne, near Pugh's, Sowilpa Creek, and T. A. Rumbley's 

 Monroe County, in Alabama; Jackson, Mississippi; Holstun's well, 5 miles 

 southeast of Gibbslaud, Louisiana; Rayburn's well, sec. 29, T. 17 N., R. 5 

 W., Louisiana; Montgomery, Louisiana. 



Geologic occurrence. — Upper aud LowBr Claibome and Jacksonian stage. 

 Milne-Edwards and Haime say: "This species has the same form as 

 Turhinolia sulcata, from which it differs by its ribs, which are not very 

 prominent, but large, especially in the lower portion. The intercostal fur- 

 rows are h(iwever rather large." ^ The very striking diff"erences in the lateral 

 ornamentation of the septa have been shown. The columella also is very 

 different. \\\ fact, the two species have very little in common. 



Turbinolia wautubbeensis sp. nov. 



PI. VI, figs. 11 to 12. 



Shape conical, with a subobtuse base. Cross section circular. Costse 

 48 in number; 24 correspond to the 24 septa, and 24 are rudimentary costa?. 

 At the calicular margin the costaj corresponding to the septa are all of the 

 same size, wdiile the rudimentar}^ costfe are smaller. As the base is 

 approached the costse corresponding to the septa become nuieh larger and 

 more prominent; about one-third of the distance from the calicular margin 

 to the base the rudimentary costae become smaller; then all of the costse 

 grow smaller until, about L3 mm. from the apex, those corresponding to the 

 primary and secondary septa become larger and more prominent again, those 

 coiTesponding to the tertiaries becoming much finer. At this second enlarge- 



' Hist. Nat. des Cor.all., Vol. II, p. 63. 



