AUT. 25 FORAMINIFERA CUSHMAN AND KELLETT 7 



This species is many times recorded in the literature, but from a 

 study of specimens from many parts of the present oceans as well as 

 fossil ones it is apparent that several distinct forms are included 

 under this name. D'Orbigny originally described the species from 

 the west coast of South America from Payta, Peru, Gobi ja, Bolivia (now 

 Cobija, Chile), and Valparaiso, Chile, and oft" Cape Horn. It has 

 occurred abundantly in our material from Payta, Eten, and Pimentel, 

 Peru, and from Lota and Corral, Chile. It is evident that the species 

 is one of the cooler waters of the western coast of the Americas and 

 probably to be found in a wider distribution, but this is to be proved. 

 The species is recorded often from the region of the British Isles, but 

 specimens do not closely match those from South America. The 

 specimens from Samoa and from the Miocene of Australia are not 

 the same. 



The different stages in development show considerable differences 

 in form. Plate 3, figure 3, is a young specimen and corresponds 

 closely to that named by Sidebottom, var. jusijormis? An older 

 specimen is show^n in Figure 2. An adult probably of the megalo- 

 spheric form is shown in Plate 3, Figure 1. 



Genus BULIMINA d'Orbigny, 1826 



BULIMINA PATAGONICA d'Orbigny 



Plate 3, figures 4 a, 6 



Bulimina patagonica d'Orbigny, Voy. Am^r. M6rid., 1839, vol. 5, pt. 5, " Foramini- 

 f^res," p. 50, pi. 1, figs. 8, 9. — Cushman and Wickenden, Proc. U. S. Nat. 

 Mus., vol. 75, 1929, p. 8, pi. 3, figs. 11 a, 6. 



D'Orbigny described this species in his South American monograph. 

 It is allied in some respects to B. marginata and B. pulchella. It has 

 a very distinctive set to the chambers and the teeth at the base of 

 the chamber are never large nor are they usually regular. The 

 specimens are from off Payta, Peru. 



The species also occurs off Juan Fernandez. 



Genus VIRGULINA d'Orbigny, 1826 



VIRGULINA, species (?) 



Plate 3, figures 5-7. 



There are a few specimens such as figured here which are some- 

 what of a puzzle. They are smooth, and resemble the form called 

 Bulimina patagonica d'Orbigny, var. glabra Cushman and Wickenden, 

 but tend to become biserial in the later portion. No definite species 

 of Virgulina was found in the collection. 



3 Journ. Roy. Micr. Soc. 1918, p. 123, pi. 3, figs. 8-10. 



