FORAMINIFERA OF THE ATLANTIC OCEAN. 



87 



same station showing the same characters, and it seems to be a local 

 variety of NodosaHa vertehralis. The true N. catenulata seems to be 

 confined to the Indo-Pacific. 



Nodosaria vertehralis, var. — m-aterial examined. 



NODOSARIA VERTEBRALIS (Batsch), var. ALBATROSSI, new variety. 



Plate 15, fig. 1. 



Nodosaria vertehralis H. B. Brady (not Batsch), Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 514, pi. 63, fig. 35; pi. 64, figs. 11-14.— Flint, 

 Rep. U. S. Nat. Mus., 1897 (1899), p. 312, pL 57, fig. 5. 



Description. — Test elongate, gradually tapering, often slightly 

 curved, the proloculum or initial chamber often being of greater 

 diameter than those immediately following; chambers numerous, 

 distinct, not inflated, except those near the apertural end; sutures 

 broad, of clear shell material, not depressed except near the aper- 

 tural end; wall ornamented by numerous longitudinal costae, typi- 

 cally 15-18 in the adult, continuous from one chamber to another, 

 sharp at the periphery, broader at the base, initial end of the test 

 with a short stout spine; aperture slightly extended, radiate. 



Length up to 8 mm. 



Distribution.— Ty^Q-s])QC\m&n (U.S.N.M. Cat. No. 17743) from 

 Albatross station D2377, in 210 fathoms (384 meters), in the Gulf 

 of Mexico. This variety is common in the Gulf of Mexico and off 

 the southeastern coast of the United States. Flint had it from the 

 northern part of the Gulf of Mexico. Brady had it from off Ber- 

 muda, off the Azores, and among the West Indies, at depths of 300- 

 450 fathoms (549-823 meters). He also records it from the South 

 Pacific, 120-300 fathoms (220-549 meters). I have recorded it from 

 the Philippines,*^ but the Philippine specimens are not of this 

 variety. The chambers are longer and the apertural end much more 

 extended. 



"Bull. 100, U. S. Nat. Mus.. vol. 4, 1921, p. 211, pi. 38, figs. 2, 3; pi. 40, fig. 2. 

 56148—23 7 



