AMERICAN SPECIES OF ORTHOPHRAGMINA AND LEPIDOCYCLINA. 



73 



365. Johnsons Sink, Levy County, Fla.; L. C. Johnson, 

 collector. 



3629. Ocala limestone, Alachua County, Fla.; T. W. 

 Vaughan, collector. 



4965. Half a mile southwest of Fort White, Columbia 

 County, Fla.; G. C. Matson, collector. 



4974. Six miles southwest of Chipley, Fla., on west 

 side of St. Andrews Bay road; G. C. Matson, collector. 



6789. North side of Alachua-High Springs public road, 

 1 mile west of North Alachua station on Atlantic Coast 

 Line Railroad, Alachua County, Fla.; T. W. Vaughan, 

 collector. 



6804. Quarry No. 1, Florida Lime Co., on southwest 

 edge of Ocala, Fla.; C. W. Cooke, collector. 



6807. Plant No. 3, Florida Lime Co., 6§ miles north of 

 Ocala, at Zuber post office, Marion County, Fla.; C. W. 

 Cooke, collector. 



6808. Quarry one-eighth of a mile southeast of Martin 

 station, Atlantic Coast Line Railroad, 9 miles north of 

 Ocala, Fla.; H. Gunter and C. W. Cooke, collectors. 



6810. Cummer Lumber Co.'s phosphate plant No. 10, 1 

 mile northwest of Newberry, Alachua County, Fla.; C. W. 

 Cooke, collector. 



6812. Cummer Lumber Co.'s phosphate plant No. 6, IJ 

 miles south of Newberry, Alachua County, Fla.; C. W. 

 Cooke, collector. 



7338. Suwannee River at Dowling Springs, Suwannee 

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



Specimens from station 7689 (Tivola, Ga. ; 

 C. W. Cooke, collector) seem to be this variety. 



Lepidocyclina subraulinii Cushman. 



Plate XXX, figures 1-6. 



Lepidocyclina suhraulinii Cushman, Carnegie Inst. Wash- 

 ington Pub. 291, p. 62, pi. 11, figs. 6, 7; pi. 12, 

 figs. 5, 6, i919. 



Test circular, much thickened ia the central 

 portion, which occupies about one-third the 

 diameter of the test; peripheral portion much 

 flattened, thin; thick central portion irregularly 

 papillate, peripheral portion smooth, showing 

 almost no tendency to become saddle-shaped. 



The vertical section shows the general thick- 

 ness, central lenticular body, and thin pe- 

 riphery, central portion with very numerous 

 pillars increasing in diameter toward the sur- 

 face; lateral chambers crowded between the 

 pillars, very numerous in the vertical columns 

 and much wider than high; equatorial cham- 

 bers increasing in diameter toward the pe- 

 riphery, the outer margin convex and with a 

 series of fuie pores. 



The horizontal section shows the equatorial 

 chambers, which are polygonal, the outer mar- 

 gin strongly convex; pillars subpolygonal with 

 the lateral chambers making irregular polyg- 

 onal meshes between, toward the periphery, 



making up the entire test as the pillars de- 

 crease in number. 



Diameter as much as 24 millimeters; thick- 

 ness ia center 4.5 millimeters. 



The type locality of this species is U. S. G. S. 

 station 3478, Nuevitas, Cuba, collected by 

 A. C. Spencer. Other specimens that appar- 

 ently belong to this species occur at station 

 7666, Sierra Guaso, northeast of Guantanamo, 

 Cuba, collected by N. H. Darton. 



In diameter and general shape this species 

 suggests L. raulinii Lemorae and R. Douville, 

 but it has very definite piUars and a papillose 

 surface at the center. 



Certain specimens collected by E. T. Dumble 

 from the Meson formation at San Jose de las 

 Rusias, Mexico, seem very close to this species. 



Lepidocyclina marginata (Michelotti) Lemoine and R. 

 Douvillg. 



Plate XXXI, figures 1-2. 



Nnmmulites marginata Michelotti, Soc. ital. sci. Mem., 



vol. 22, p. 297, pi. 3, fig. 4, 1841. 

 Lepidocyclina marginata (Michelotti) Lemoine and R. 



Douville, Soc. geol. France, Paleontologie, vol. 12, 



Mem. 32, p. 16, pi. 1, fig. 7; pi. 2, figs. 7, 9, 11, 20; 



pi. 3, figs. 3, 8, 9, 13, 1904. 

 Cushman, Carnegie Inst. Waslaington Pub. 291, p. 60, 



pi. 12, figs. 1, 2, 1919. 



Test of small or medium size, lenticular, 

 thickest in the central region, thence tapering 

 gradually to the periphery, which in the adult 

 forms a thin flange about the thicker central 

 portion; central portion with numerous prom- 

 inent pustules, rather evenly placed and of 

 good size, representing the outer end of the 

 piUars, flange smooth except for roughness 

 caused by weathermg. 



The vertical section shows the general shape 

 already noted, the ntunerous pillars giving an 

 undulate outline to the central thickened re- 

 gion, pillars rather crowded at the center but 

 separating toward the periphery, increasing 

 very rapidly in diameter in the first quarter or 

 third of their length, thence keeping about the 

 same diameter to the surface; lateral chambers 

 in single columns between the pillars; equa- 

 torial band of chambers rather narrow and 

 thin, increasing in height toward the periphery. 



The horizontal section shows the equatorial 

 charabers to be in general hexagonal, occasion- 

 ally with the peripheral portion convexly 

 curved; the lateral chambers also hexagonal, 



