40 Bulletin 31 40 



Specimen figures. — C. U. Pal. Mus.. from Claiborne. 

 Localities. — Claiborne Ala. ; 3 and 6 miles W. N. W. of 

 Orangeburg, S. C. 



Trinacria pulchra Gabb, PI. 18. Figs. 11-14. 



Ncetia pulchra Gabb, Jr. Phila. Acad. Nat. Sci., IV, i860, p, 388, pi. 



67, fig. 55. 

 Liniopsis pulcherYi^^^., Proc. Acad. &c., 1890, p. 403. 

 Same as Trinacrina dicisa, fide Dall, Trans. Wag. Ill, '65, p. 658. 

 Same as Liniopsis decisusf ,fide Con., J. A. Conch., vol. i, 1865, p. 12. 

 For Gabb's original description, see these Bulletins, vol. 2, p. 240. 



We note that Dall calls attention to Sowerby's Area pulchra, 

 dating from 1824, but on no occasion do we find Gabb using 

 Noetia with pulchra except as an independent genus. The name, 

 also, is verj^ appropriate. As to its relationship to dccisa one 

 notes at once its smaller and much more inflated form and com- 

 paratively thicker shell and stronger radial markings. It is 

 very characteristic of the St. Maurice stage W. of the Mississ- 

 ippi. 



The sculpturing varies from rather pronounced radiating 

 raised lines (appearing most pronounced between the growth 

 lines) to those less conspicuous, but broader, separated by 

 sharpl 3^ depressed lines of growth. Gabb's sketch of this species 

 as shown in the Jr. Phil. Acad., above referred to is not bad, 

 showng as it does the true form, size and the characteristic liga- 

 mental area of the genus. 



Type.—V\i\\2i. Acad. Nat. Sci. 



Horizon. — St. Maurice Stage of the Eocene. 



Speci^nen figured. — Paleont. Mus. Cornell Univ. 



Localities. — Texas: Colorado River, Devil's Eye, Bastrop 

 Co. : Smithville, Bastrop Co. ; Wheelock, Robertson Co. ; Cedar 

 Cr., Robertson Co. ; Eittle Brazos River, near Mosley's Ferry 

 road ; Well at College Sta., Brazos Co. ; Alabama Bluff , Trinity 

 River ; Campbell Cr. , Gifford Headright, Robertson Co. ; Ber- 

 ryman place, Kimble headright, Cherokee Co. ; Orrell's Crossing, 

 Elm Cr., Lee Co. ; one mile south from Nevilles, Gonzales Co. ; 

 three miles south of Palestine, Anderson Co. ; Anderson's 

 Ranch, Frio. Co. Louisiana : Chautauqua ; deep water well at 



