TROPICAL PACIFIC FORAMINIFERA OF ALBATROSS 39 



Chapman described this variety from "forty miles South of Cape 

 Wiles," and I have had it from material off New Zealand. There 

 is a single specimen from Albatross Station H3992, Schischmarev 

 Pass, Marshall Islands, 482 fathoms, which seems to belong to this 

 variety. 



SPIROLOCULINA CADUCA Cushman 



Plate 9, Figures 11, 12 



Splroloculina caduca Oushman, Carnegie Inst. Washington Publ. 311, p. 61, 

 pi. 11, figs. 3, 4, 1922 ; U. S. Nat. Mus. Bull. 104, pt. 6, p. 42, pi. 9, figs. 1, 

 2, 1929. 



Test broadly elliptical, much compressed, the apertural end ex- 

 tended ; chambers of the adult with a sharp translucent keel, usually 

 somewhat lobulated; sutures slightly depressed, surface of the 

 chambers sometimes with irregular, raised costae, more or less oblique 

 in position; aperture at the end of the cylindrical neck, rounded, 

 with a simple tooth; surface smooth, shining, but the wall very 

 thin and brittle. Length, 0.75 mm.; breadth, 0.45 mm.; thickness, 

 0.1 mm. 



The only previous locality for this species is the Tortugas off 

 Florida. It is interesting to find very typical specimens, two of 

 which are here figured from Port Lotten, Kersail, Caroline Islands. 



SPIROLOCULINA PLANISSIMA (Lamarck) Tar. SAMOAENSIS Cashman 



Plate 10, Figures 1 a, b 



Spiroloculina pianissimo, (Lamarck) var. samoaensis Cushman, Carnegie 

 Inst. Washington Publ. 342, p. 58, pi. 21, figs. 9, 10, 1924. 



Variety differing from the typical in the broader form and the 

 ornamentation consisting of oblique costae running in part way from 

 the border of the test. 



This variety, described and figured from Samoa, occurs in very 

 typical form at Vavau Anchorage, Tonga Islands. It apparently 

 is the same as S. striata d'Orbigny, which was named by him in 1826, 

 but not figured until Fornasini gave figures of those species described 

 by d'Orbigny but not figured in the 182G paper. Meanwhile other 

 authors had used d'Orbigny's name of striata, so that this is not 

 available for this form, which is probably somewhat widely dis- 

 tributed in the Indo-Pacific, d'Orbigny's species being from Rawack. 



SPIROLOCULINA EXIMIA Cushman 



Plate 10, Figures 2, 3 



Spiroloculina eximia Cushman, Carnegie Inst. Washington Publ. 311, p. 61, pi. 

 11, fig. 2, 1922; Publ. 342, p. 56, pi. 21, fig. 2, 1924; U. S. Nat. Mus. Bull. 

 104, pt. 6, p. 42, pi. 8, figs. 7 a, b, 1929. 



