94 BULLETIN 104, UNITED STATES NATIONAL MUSEUM 



Trans. Zool. Soc. London, vol. 20, 1915, p. 590, pi. 46, figs. 3-7. — Side- 

 bottom, Journ. Roy. Micr. Soc, 1918, p. 10. — Cushman, Publ. 311, Car- 

 negie Instit. Washington, 1922, p. 62, pi. 10, fig. 8. — Heron-Allen and 

 Earland, Bull. Soc. Sci. Hist. Nat. Corse, 1922, p. 123; Journ. Linn. Soc. 

 Zool., vol. 35, 1924, p. 609. 



Test minute, generally oval in outline, biconvex, consisting of a 

 few milioline chambers, the apertural end somewhat extended, turned 

 so that the aperture is entirely at one side of the test; aperture ellip- 

 tical or rounded, with a broad, flaring lip; sutures fairly distinct not 

 depressed; wall translucent; color, bluish- white. 



Length, 0.20 mm.; breadth, 0.15 mm.; thickness, 0.08 mm. 



Egger described this species from the Indo-Pacific where it has 

 been found several times since. The only record from the Atlantic 

 seems to be that from the Tortugas. I have seen specimens from off 

 Beaufort, on the Carolina coast, and so it must have a fairly wide 

 distribution in the West Indian region. Its small size makes it easily 

 overlooked. 



PLANISPIRINA COMMUNIS Seguenza 



Planispirina communis Seguenza, Atti Accad. Lincei, ser. 3, vol. 6, 1880, 

 p. 310, pi. 17, figs. 18, 18a. — H. B. Brady, Rep. Voy. Challenger, Zoology, 

 vol. 9, 1884, p. 196, pi. 114, figs. 4-7.— Egger, Abhandl. kon. bay. Akad. 

 Wiss., CI. II, vol. 18, 1893, pi. 3, figs. 25, 26.— Woodward, The Observer, 

 vol. 4, 1893, p. 77.— Chapman, Journ. Linn. Soc. Zool., vol. 28, 1902, p. 399 

 (list). — Heron-Allen and Earland, Trans. Zool. Soc. London, vol. 20, 

 1915, p. 591, pi. 46, figs. 8,9. 



Test bilaterally symmetrical, early portion with a proloculum and 

 close coiled, tubular chamber making several coils, after which cham- 

 bers of gradually shorter lengths are formed, until, in the adult, four or 

 or more chambers make up a coil; sutures obscure, due to the involute 

 character of the chambers; wall smooth; aperture simple, elongate, 

 without a tooth. 



There are but few records for this species. It occurs in the Atlantic 

 off the Faroe Islands, 170 fathoms according to Brady, and Woodward 

 mentions it from off Bermuda. The other recent records are from 

 the Indo-Pacific. 



In the adult there is a tendency for the test to uncoil. 



PLANISPIRINA EXIGUA (H.B.Brady) 



Hauerina exigua H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 53. 



Planispirina exigua H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 196, pi. 12, figs. 1-4, text fig. 5 b.— H. B. Brady, Parker, and 

 Jones, Trans. Zool. Soc. London, vol. 12, 1888, p. 216, pi. 40, fig. 4.— How- 

 chin, Trans. Proc. Roy. Soc. So. Australia, vol. 12, 1889, p. 5. — Egger, 

 Abhandl. kon. bay. Akad. Wiss. Munchen, CI. II, vol. 18, 1893, p. 245, pi. 

 3, figs. 11, 12. — Woodward, The Observer, vol. 4, 1893, p. 77. — Millett, 

 Journ. Roy. Micr. Soc, 1898, p. 611, pi. 13, fig. 13. — Chapman, Journ. 

 Linn. Soc. Zool., vol. 30, 1907, p. 21, pi. 2, fig. 43; Subantarctic Islands of 

 New Zealand, 1909, p. 323. — Heron-Allen and Earland, Trans. Zool. 



