14 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 75 



CusHMAN and Wickenden, Proc. U. S. Nat. Mus., vol. 75, 1929, p. 12, pi. 

 5, figs. 2-4. 



Test free, subglobular, early chambers rotaliform, numerous, rather 

 coarsely perforate, forming a cap to which is attached in the adult 

 pelagic stage a large final " balloon-chamber," subspherical, with 

 coarse perforations on the ventral side and within, a "float-chamber" 

 with a single opening at the base from which a tubular neck projects 

 inward; color of the early chambers dark brown, the large chamber 

 colorless. 



Diameter, 0.50 mm. 



The only specimens in the collection are from the station off Santa 

 Elena, Ecuador, at which the other tropical West Indian species 

 were present. It is a very widely distributed species on account of 

 its pelagic habit in the adult. 



Family GLOBIGERINIDAE 



Genus GLOBIGERININA d'Orbigny, 1826 



GLOBIGERINA BULLOIDES d'Orbigny 



There is a single rather typical specimen of this species from off 

 Santa Elena, Ecuador. In the collections along the coast northward 

 to Oregon the species is represented by very few specimens and some 

 of these may be the young of Globigerinoides sacculifera H. B. Brady. 



GLOBIGERINA CONGLOMERATA Schwager 



Globigerina conglomerata Schwager, Novara Exped., Geol. Theil., pt. 2, 1866, p. 



255, pi. 7, fig. 113. — CusHMAN, Bull. Scripps Instit. Oceanography, Tech. 



Ser., vol. 1, 1927, p. 172. 

 Globigerina dutertrei H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884> 



p. 601, pi. 81, figs. 1 a-c (not d'Orbigny). 

 Globigerina dubia H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, pi. 



79, figs. 17 a-c (not Egger). 



Test subglobose, in the early stages consisting of but four chambers 

 in each whorl, closely grouped; aperture small and with a distinct 

 lip; in later stages with five or six chambers in the whorl, the last 

 whorl usually below the level of the preceding ones and with a dis- 

 tinct umbilicus. 



This species described by Schwager from the Pliocene of Kar Nico- 

 bar is the most common species in the late tertiary and recent collec- 

 tions from the Pacific region. We have specimens for comparison 

 from the original material of Schwager's from Kar Nicobar. 



Genus GLOBIGERINELLA Cushman, 1927 



GLOBIGERINELLA AEQUILATERAUS (H. B. Brady) 



Globigerina aequilateralis H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, 

 p. 71; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 605, pi. 80, figs, ft-21.— 

 Cushman, Bull. 104, U. S. Nat. Mus., pt. 5, 1924, p. 25, pi. 4, figs. 7, 8. 



