46 



SHORTER CONTRIBUTIONS TO GENKRAI. CEOLOGY, 1019. 



This species is very close to (). taramellei 

 Munier-Clinlnias but is decidedly smaller, all 

 the specimens seen from Cul)a being less than 

 2 millimeters in diameter between the tips of 

 the arms. 



The specimens from station 6120 are weath- 

 ered out and are numerous and of greenish 

 color. 



0. taramellei was described from Villa Lady 

 Bruce (Biarritz); Monte Spilecco (Vicentin); 

 and Schonegg, near Kj-essenburg. 



Orthophragmina antillea Cushman. 



Plate X, figures 4, 5. 

 Orthophragmina antillea Cushman, Carnegie Inst. Wash- 

 ington Pub. 291, p. 55, pi. 1, fig. 1; pi. 2, figs. 2, 3; 

 pi. 4, figs. 2, 4, 1919. 



Test flattened, octagonal, surface with eight 

 raised ribs radiating from the central, some- 

 what raised umbo to the periphery; triangular 

 areas between, thin and flattened; umbonal 

 area raised and roimded, with definite pillars 

 appearing as differences in coloration in the 

 type; radial ribs with numerous raised areas 

 and piUars scattered along their whole length. 



Vertical sections show the greater diameter 

 of the ecpatorial chambers at irregular inter- 

 vals and the irregular, almost serrate character 

 of the upper and lower surfaces due to the 

 fine projections of the surface, especially along 

 the ribs. 



Horizontal sections through the equatorial 

 chambers were obtained only in small frag- 

 mentary bits but enough to show the typical 

 rectangular chambers of the genus. 



Diameter, about 12 millimeters. 



Type specimen from U. S. G. S. station 6S95, 

 spur on southeast side of bay northwest of St. 

 Jean Bay, St. Bartholomew, Leeward Islands; 

 T. W. Vaughan, collector. Sections apparently 

 of this species came from station 6924, point 

 on northwest side of St. Jean Bay, St. Barthol- 

 omew, Leeward Islands; T. W. Vaughan, 

 collector. Specimens are very numerous in 

 these sections, but the surface does not weather 

 out well in the material examined. 



There appear to be from five to eight layers 

 of superimposed lateral chambers, as shown 

 in the sections. A few of the smallest speci- 

 mens show the embryonic chambers, but they 

 are not well preserved. Plate X, figure 5, 

 shows the general characters of the vertical 

 section. Occasional obli([ue sections show the 

 rectangular equatorial chambers characteristic 



of Ortlwpliragrnina. Sections A'cry similar to 

 those figured are included in material from 

 station 6512, in the big white limestone from 

 the river bed above the ice plant near David, 

 Panama, collected by D. F. MacDonald. 



The species is close to 0. rnariannensis 

 Cushman from the Ocala limestone at Mari- 

 anna, Fla. 



The tj\)(^ specimen is the one mentioned by 

 Vaughan' as Orhitoides sp., "large, stellate 

 form." 



Orthophragmina rnariannensis Cushman. 



Plate XI, figure 1. 



Ortliophragmina rnariannensis Cushman, U. S. Geol. Sur- 

 vey Prof. Paper 108, p. 116, pi. 40, fig. 5; pi. 42, 

 fig. 2; pi. 44, 1917. 



Test flattened, conspicuously stellate, the 

 angles extending out acutely with curved re- 

 entrants, of medium size ; central region umbo- 

 nate, from wliich extend 8 to 11 (typically 8) 

 raised ribs, running to the peripheral angles; 

 umbo and ribs finely papillate ; depressed areas 

 between flat and rather remotely and finely 

 papillate except toward the periphery, where 

 the papillae are sUghtly more conspicuous. 



The horizontal section shows much elon- 

 gated rectangular equatorial chambers, the 

 lateral chambers irregularly polygonal in 

 section. 



Vertical section with the embryonic chambers 

 very unequal; distinct piUars between the 

 vertical columns of lateral chambers, increas- 

 ing in diameter toward the surface. 



Diameter, 15 to 18 millimeters. 



Abundant at the type locality, station 6768, 

 Ocala limestone on Chipola River at wagon 

 bridge half a mile east of Mariaima, Fla.; No. 

 1 of section; C. W. Cooke, collector. A single 

 specimen was recorded from station 3387, 

 Ocala limestone at Red Bluff, on Flint River, 

 7 miles above Bainbridge, Decatm- County, 

 Ga. ; T. W. Vaughan, collector. Additional 

 stations are as follows: 



7097. East bank of Flint River above old factory at 

 bend three-fourths mile northeast of Atlantic Coast Line 

 Railroad station at Bainbridge, G?.; C. W. Cooke and A^'. 

 C. Mansfield, collectors. 



82o9. About 6 miles southeast of Campbellton and 12 

 miles northwest of Mariamia, on road to Cottonwood, Ala., 

 half a mile from its intersection ^vith the Marianna-Camp- 

 bellton road, Jackson County, Fla.; C. W. Cooke, col- 

 lector. 



1 Vaughan, T. W., Carnegie Inst. Washington Year Book No. 13, 

 for 1914, p. 359. 



