78 



BULLETIN 11, UNITED STATES NATIONAL MUSEUM. 





I 

 ft 



ft 



BILOCULINA ELONGATA d'Orbigny. 



Plate 81, fig. 1. 



Biloculina elongata d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 298, No. 4. — 



H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 144, pi. 2, fig. 9.— 



dlgfglB&j* Schlumberger, Mem. Soc. Zool. France, vol. 4, 1891, p. 184, 



pi. 11, figs. 87, 88, pi. 12, fig. 89, text figs. 35, 36.— Bagg, 



Proc. U. S. Nat. Mus., vol. 34, 1908, p. 118. 



Description. — Test elongate, pyrif orm, tapering 

 gradually to the apertural end, somewhat rounded 

 truncate at the opposite end, in end view cham- 

 bers well rounded, periphery rounded, suture 

 depressed; wall smooth, white; aperture ellipti- 

 cal, about twice as long as high, with a small 

 flattened rounded tooth only about one-fourth 

 filling the opening in end view. 



Length, 0.5 to 0.8 mm. 



Distribution. — Bagg records this species from 

 the following three Albatross stations in the 

 vicinity of the Hawaiian Islands: D4017 in 305 

 fathoms, D4025 in 275-368 fathoms, and H4567 

 in 1,307 fathoms. I have had material from 

 three Nero stations in the same region, 2037 in 

 55 fathoms, 2070 in 285 fathoms, and 2071 in 271 

 fathoms ; also from Tuscarora station 1 in latitude 

 21° 10' N.; longitude 158° 04' W., in 206 fathoms. 



BILOCULINA GLOBULUS Bornemann. 



Plate 31, fig. 2. 



Biloculina globulus Bornemann, Zeitschr. deutscli. geol. Gesell., vol. 7, 1855, 

 p. 349, pi. 19, fig. 3. — Schlumberger, Mem. Soc. Zool. France, vol. 4, 1891, 

 p. 188, pi. 12, figs. 97-100, text figs. 42-44. 



Description. — Test in front view oval, in end view irregularly 

 globular, chambers very tumid, suture slightly depressed, in side view 

 the last formed chamber at the aboral end somewhat curving out 

 over the preceding chamber; wall smooth, white; aperture semicir- 

 cular, with a simple flat tooth filling a large part of the opening. 



Length, about 1 mm. 



Distribution. — About the Hawaiian Islands the species has occurred 

 at Nero stations 2037 in 55 fathoms, 2071 in 271 fathoms, and Alba- 

 tross H3007 in 323 fathoms; near Guam, Nero 1464 in 891 fathoms; 

 in Colnett Strait, Albatross H4882 in 248 fathoms. It also occurred 

 at two Tuscarora stations 1, latitude 21° 10' N.; longitude 158° 04' W., 

 in 206 fathoms, and 2 in latitude 33° 46' N.; longitude 140° 21' E., 

 in 437 fathoms. 



Fig. 40.— Biloculina elon- 

 gata d'Orbigny. X18. 



