MIT. 9 RECENT FOKAMINIFERA CUSHMAN AND WICKENDEN 9 



BULIMINA PATAGONICA d'Orbigny, GLABRA, new variety 



Plate 4, figures 1 a-c 



Test broadest near the apertural end and much Hke d'Orbigny's 

 figure of Bulimina 'patagonica, except that the ornamentation at the 

 base of the chambers is wanting. 



Holotype of variety.— {C&t. No. 20777, U.S.N.M.), collected by 

 Dr. Waldo Schmitt in material from off Juan Fernandez. 



Genus VIRGULINA d'Orbigny, 1826 



VIRGULINA SCHREIBERSIANA Czjzek 



Plate 4, figures 2 a, b 



There have been very many forms referred to t'lis species which 

 have no surface ornamentation, and the chambers rather irregularly 

 arranged. The specimens fit Czjzek's species as closely as do many 

 others, and it has seemed best to leave them under his name. 



Genus BOLIVINA d'Orbigny, 1839 



BOLIVINA DONIEZI, new species 



Plate 4, figures 3 a, h 



Test small, depressed, broadest near the apertural end; chambers 

 comparatively few, consisting of 8 or 10 pairs; wall very coarsely 

 perforate, the earlier chambers with a few coarse perforations near 

 the basal margin, the adult chambers with the coarse perforations 

 scattered over the general surface; chambers fairly narrow, but 

 becoming higher toward the apertural end; sutures distinct, depressed, 

 strongly oblique; aperture elongate, arched, in the median line at 

 the base of the last-formed chamber. 



Length 0.36 mm., breath 0.15 mm., thickness 0.10 mm. 



Holotype— {Cat. No. 20778, U.S.N.M.) from material collected 

 by Doctor Schmitt from off Juan Fernandez. The species has been 

 named for Sefior Doniez of the firm Recart & Doniez, concessionaires 

 of the principal lobster fishery on the island. 



This species from other records is probably widely distributed in 

 the Indo-Pacific region. 



BOLIVINA SUBEXCAVATA, new species 



Plate 4, figures 4 c, 6 



Test small, broadest near the apertural end, from which it rapidly 

 tapers to the initial end; periphery rounded; chambers few, con- 

 sisting of six or eight pairs, the earlier ones broad and low, the later 

 ones increasing in height toward the apertural end; sutures distinct, 

 depressed, slightly oblique; wall very coarsely perforate, with two 

 regions, one at either side of the central area, which is excavated; 

 aperture, an arched indentation at the base of the last-formed 

 chamber in the median line. 



Length 0.32 mm., breadth 0.18 mm., thickness 0.12 mm. 



