FOSSIL FORAMINIFERA FROM THE WEST INDIES. 53 



Orthophragmina crassa, new species. 

 (Plate 9, Figures 4 and 5; Plate 10, Figures 2 and 4.) 



The following is a description of this species: 



Test circular, lenticular, very thick in comparison to the diameter, central 

 portion broadly convex, thence straight or even slightly concave to the rather 

 acute periphery; surface fairly smooth, with a few raised ends of pillars making 

 the surface slightly papillate. 



Vertical section shows the general shape, in some specimens at least two- 

 thirds as thick as the diameter, central portion broadly rounded, with numer- 

 ous large pillars, increasing in diameter toward the surface, lateral chambers 

 very numerous, about three times as wide as high, usually at least 2 columns 

 between each two adjacent pillars even in the center; over 30 chambers in the 

 center in some of the columns are indicated; equatorial chambers increasing 

 very slowly in height toward the periphery, but more rapidly than in most 

 species, so that the equatorial band at the periphery may be double the width 

 near the center; embryonic chamber comparatively large, elongate in this 

 section. 



Horizontal section shows the usual elongate, rectangular equatorial cham- 

 bers; the pillars subpolygonal, largest in the center, thence smaller toward 

 the periphery, intermediate lateral chambers irregularly polygonal. 



Diameter 3.5 to 5.5 mm. 



Type specimen (U. S. N. M. No. 328185) from station 6122, greensand 

 limestone, Boston manganese mine, Santiago Province, Cuba, col- 

 lected by A. C. Spencer. The species also appears to be present at the 

 following stations: 6123, Ponupo manganese mine, resting on ore-bed 

 4 to 6 feet thick, Santiago Province, Cuba, collected by A. C. Spencer; 

 6124, foraminiferal limestone, Ponupo manganese mine, collected by 

 R. T. Hill; 6125, railroad cut near San Nicolas manganese mine, west 

 of San Luis, Cuba, collected by C. W. Hayes; 6118, fossil limestone 

 near railroad, on trail to mines south of Cristo, and 6119, Isabella and 

 Boston manganese mine, Cuba, collected by C. W. Hayes; 3475, 

 Boston mine, near Santiago, Cuba, collected by A. C. Spencer; and 

 apparently from 6117, bowlder from the band of limestone, hill east of 

 railroad and south of Cristo, near Santiago, Cuba, collected by C. W. 

 Hayes. 



Orthophragmina subtaramellei, new species. 

 (Plate 10, Figure 2; Plate 15, Figures 1 to 3.) 



The following is a description of this species: 



Test stellate, usually with 5 arms, occasionally 6, arms well distinguished 

 from the central body and extending outward freely; thickest in the central 

 region, thence gradually sloping to the angles between the arms, and gradually 

 merging into the median axis of the arms; the arms themselves thickest in the 

 middle, thence sloping to the sides, which are thin and angled, ends of the 

 arms round-pointed; surface with numerous granulations, more pronounced 

 in the central portion. 



Vertical sections show the general shape, the equatorial band of chambers 

 increasing slightly if at all from the center to the periphery, pillars well 

 developed, especially in the central region, but not numerous, usually several 

 columns of lateral chambers between them. 



Diameter 1.5 to 2 mm. 



