118 



BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



paratively few, slightly inflated; sutures distinct, usually slightly 

 depressed; wall smooth; aperture terminal, radiate. 



Length up to 1.50 mm. 



Distribution. — Various forms of uncoiled compressed Cristellarias 

 are included under this name by various authors. Specimens have 

 occurred at a considerable number of stations in the Western Atlan- 

 tic, in the Gulf of Mexico, and off the southeastern coast of the 

 United States. There are numerous records for the species else- 

 where, off the Abrohlos Bank, Brazil, numerous records from off the 

 British Isles, also in the northern regions about the coast of Green- 

 land, and in other parts of the world from most of the regions where 

 foraminifera have been recorded. From a study of specimens from 

 various regions it seems to me that it should be possible to distin- 

 guish different forms which have a definite geographical distri- 

 bution. 



Cristellaria crepiditla — material examined. 



CRISTELLARIA HAUERINA D'Orbigny. 



The only record for this species seems to be that of Heron- Allen 

 and Earland,^* who record " a single typical specimen off South 

 Cornwall." 



CRISTELLARIA SCHLOENBACHI Reuss? 



Plate 35. figs. 8-10. 



Cristellaria schloenbachi Eeuss, Sitz. Akad. Wiss. Wien, vol. 46, 1862, 

 (1863), p. 65, pi. 6, figs. 14, 15.— H. B, Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 539, pi. 67, fig. 7.— Flint, Rep. U. S. Nat. Mus., 

 1897 (1899), p. 315, pi. 63, fig. 4.— Chapman. The Foraminifera, 1902, 

 p. 403. — MiLLETT, Journ. Roy. Micr. Soc, 1902, p. 253. — Chapman, 

 Trans. N. Zealand Inst., vol. 38, 1905, p. 96; Subantarctic Ids. N. 

 Zealand, 1909, p. 342.— Pearcey, Trans. Roy. Soc. Edinb., vol. 49, 1914, 

 p. 1022. — Chapman, Biol. Res. Endeavour, vol. 3, pt. 1, 1915, p. 24. — 

 CusHMAN, Proc. U. S. Nat Mus., vol. 56, 1919, p. 616; Bull. 100, U. S. 

 Nat. Mus., vol. 4, 1921, p. 249. 



Description. — Test elongate, several times as long as broad, very 

 early portion close-coiled, very quickly becoming uncoiled, elliptical 



"Journ. Roy. Micr. Soc, 1916, p. 47. 



