no. 2360. FORAMINIFERA FROM JAMAICA— CUSHM AN. 63 



Genus SPIROLOCULINA d'Orbigny, 1826. 



SPIROLOCULINA ANTILLARUM d'Orbigny. 



Plate 14, figs. 14, 15. 



Spiroloculina antillarum d'Orbigny, Foram. Cuba, 1839, p. 166, pi. 9, figs. 3, 

 4(?).— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 155, pi. 

 10, figs. 21a, b. 



An examination of the Jamaican material and a comparison of 

 the material with the figures given by d'Orbigny seem to show that 

 S. antillarum should be the name used for our recent species so com- 

 mon among coral reefs in shallow water. In that case it would take 

 precedence over S. grata Terquem, which Brady took for the name 

 for our recent species. A comparison of Terquem's and d'Orbigny's 

 figures would seem to show that the Cuban species certainly as fully 

 represents our recent species as does that from the Pliocene of the 

 Isle of Rhodes. D'Orbigny's name was published nearly 40 years 

 earlier. Brady's figure, which he refers to Spiroloculina antillarum, 

 is not typical of this species, as it occurs in the West Indies. 



Specimens were found in dredgings from Montego Bay, stations 

 1, 2, and 4, and from Runaway Bay. 



SPIROLOCULINA ANTILLARUM d'Orbigny, var. ANGULATA Cushman. 



Plate 14, fig. 16. 



Spiroloculina grata H. B. Brady (part), Rep. Voy. Challenger, Zoology, vol. 9, 



1884, pi. 10, figs. 22, 23. 

 Spiroloculina grata Terquem, var. angulata Cushman, Bull. 71, U. S. Nat. Mus., 



pt. 6, 1917, p. 36, pi. 7, fig. 5. 



This variety occurs with typical 8. antillarum. It was noted at 

 Montego Bay at stations 1, 2, 3, and 10. 



SPIROLOCULINA ARENATA, new species. 



Plate 14, fig. 17. 



Description. — Test compressed, chambers in a single plane, each 

 much greater in diameter at the initial end, gradually narrowing 

 to the aperture, both ends projecting beyond the ends of the preceding 

 chamber, apertural end produced into a rounded neck, periphery 

 broadly rounded, sutures deep and distinct; wall of sand grains 

 rather coarse for the size of the test; aperture rounded. Length, 

 0.6-0.9 mm. 



Type specimen (U.S.N. M. No. 15989) from station 2, Montego 

 Bay, Jamaica. Specimens were also obtained from stations 1, 4, 

 and 6 at Montego Bay. 



This has a different form from S. asperula Karrer. Occasionally 

 the chambers leave openings in the test where the newly-formed 



