AMERICAN SPECIES OF ORTHOPHRAGMINA AND LEPIDOCYCLINA. 



59 



tions from which I have not seen material 

 should be checked from collected material if 

 it is extant. 



H. Douville ^ figures sections of L. manteUi 

 that appear to show very small pillars near 

 the equatorial chambers, which become obso- 

 lete very early in their development. Such a 

 structure would tend to show the senescent 

 rather than primitive character of this species. 



Instead of L. manteUi initiating the appear- 

 ance of Lepidocydina in America in the upper 

 Eocene, as stated by Douville, the species comes 

 relatively high in the series and is a character- 

 istic or index fossil of the Mariamia limestone, 

 which in the areas where it is most definitely 

 developed is the middle formation of the Vicks- 

 burg group of the lower Oligocene, as shown by 

 Cooke ^ in his correlation table. 



L. manteUi, like most of the other species of 

 the genus, was not very long lived, and is con- 

 fined in great numbers to a narrow horizon. 



A few of the folloAving records may need 

 revision, as the material is poor, but most of 

 them are well characterized. 



In his original description Morton gives the 

 following sentence: "Imiumerable in the whit- 

 ish loose-grained limestone near Claiborne, 

 Ala." Although Morton's type specimen does 

 not seem to be extant, it is very easy to deter- 

 mine from his very short description and the 

 rather crude figure coupled with the above 

 sentence just what L. manteUi is. Various other 

 species have been referred to it from time to 

 time, and these references need correction. 

 Typical L. manteUi has been obtained at the 

 following stations from which I have seen 

 material : 



"298. Marianna limestone, St. Stephens Bluff, Tombig- 

 bee River, Ala.; L. C. Jolinson, collector. 



301. Marianna limestone (?), Gainestown, Clarke 

 County, Ala.; L. C. Johnson, collector. 



306. Marianna limestone (?), Feagin, Covington Coiinty, 

 Conecuh River, Ala.; L. C. Johnson, collector. 



2397. Marianna limestone, near residence of Bush 

 Slaughter, 7 miles southwest of Claiborne, 2 miles east of 

 Howards Landing, Monroe County, Ala.; Frank Bums, 

 collector. 



2956. Marianna limestone (?) "Orbitoides papyraceus," 

 2 miles southwest of Whatley Station, Clarke County, Ala. ; 

 Frank Burns, collector, 1897. 



3296. Marianna limestone, north side of Salt Mountain, 

 5 miles south of Jackson, Clarke County, Ala. (below 

 coral-reef horizon); T. W. Vaughan, collector, 1898. 



1 Compt. Rend., 1918, p. 263. 



2 Cooke, C. W., Washington Acad. Sci. Jour., vol. 8, p. 187, 1918. 



5609. Marianna limestone, St. Stephens Bluff, Tombig- 

 bee River, Ala.; T. W. Vaughan, collector, 1908. 



5619. Oligocene (Vicksburg group), 2 miles west of Nero, 

 Monroe County, 5 miles north of Mero's (Blackshire Head- 

 quarters), south bank of Lovetts Creek, Ala.; G. C. 

 Matson, collector, 1910. 



6702. Marianna limestone, hillside a quarter of a mile 

 east of Alabama, Tennes.see & Northern Railroad, 2J miles 

 north of Millry, Washington County, Ala.; C. W. Cooke, 

 collector. 



6710. Marianna limestone, St. Stephens Bluff, Tombig- 

 bee River, Ala.; bed 7 of section, soft white "chimney 

 rock"; C. W. Cooke, collector. 



6711. Marianna limestone, St. Stephens Bluff , Ala.; bed 

 4 of section; C. W. Cooke, collector. 



6716. Marianna limestone, ravine east of road about 

 tliree-quarters of a mile north of Monroeville, Monroe 

 County, Ala.; C. W. Cooke, collector. 



6717. Marianna limestone, 1 mile north of Monroe\nlle, 

 Monroe County, Ala.; C. W. Cooke, collector. 



6721. Marianna limestone, gully south of station at 

 Drewry, Monroe County, Ala.; C. W. Cooke, collector. 



6728. Marianna limestone, road from Perdue Hill to 

 Claiborne, Monroe County, Ala.; exposed in gully west of 

 road, bed 1 of section (bottom 250 feet above Alabama 

 River); C. W. Cooke, collector. 



6729. Marianna limestone, road from Perdue Hill to 

 Claiborne, Monroe County, Ala.; bed 3 of section; C. W. 

 Cooke, collector. 



6732. Mariamia limestone, Murder Creek at bridge east 

 of Castleberry, Conecuh County, Ala.; bed 1 of section; 

 C. W. Cooke, collector. 



6733. Marianna limestone, bed 2 of same section as 6732. 

 6748. Marianna limestone, west bank of Coneculi River 



at bend about a quarter of a mile below mouth of Sepulga 

 River, Escambia County, Ala. ; C. W. Cooke, collector. 



6750. Marianna limestone. Rock House Bluff, right 

 bank of Conecuh River, near line between sees. 28 and 29, 

 T. 3 N., R. 14 E., Covington County, Ala.; talus from 

 upper bed; C. W. Cooke, collector. 



7164. Glendon limestone member of Marianna limestone, 

 Jackson-Rockville road, 200 yards north of Salt Creek, 

 Clarke County, Ala.; bed 3 of section; C. W. Cooke, 

 collector. 



7208. Marianna lim.estone, Whitsett's quarry, about 3 

 miles south of CuUomburg, Ala.; beds 2-4 of section; C. 

 W. Cooke and W. C. Mansfield, collectors. 



7238. Marianna limestone. Murder Creek at bridge east 

 of Castleberry, Ala. ; bottom of bed 1 of section; C. W. Cooke 

 and W. C. Mansfield, collectors. 



The specimens from the following stations 

 seem to be L. manteUi: 



119. Tertiary, Bogue Homo rocks and prairies, Jasper 

 County, Miss.; L. C. Johnson, collector. 



259. Vicksburg group, about middle beds of the bluff 

 in hard marlstone, Vicksburg, Miss.; Bums, collector. 



334. Vicksburg 'group, south side of Eucutta Creek, 

 Wayne County, Miss., on a high hill 5 miles west of Shu- 

 buta, Clarke County, Miss. 



337. Vicksburg group, Heidelberg, Jasper County, Miss., 

 sec. 25; L. C. Johnson, collector. 



2636. Oligocene, Wayne County, Miss.; Bums, collector. 



