248 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



Length up to 6 mm. 



Distribution. — The only station from which this species was ob- 

 tained is Albatross station D5670 in 1,181 fathoms (2,160 meters), in 

 Macassar Strait, with a bottom temperature of 38.2° F. (3.4° C). It 

 apparently has not previously been recorded from the Pacific. 



The specimen and those figured by Brady seem almost like an ex- 

 treme form of C. cassis (Fichtel and Moll), as they have very similar 

 characters except that this is much more uncoiled than is C. cassis 

 and lacks the bosses of the ornamentation. 



Cristellaria compressa — Material examined. 



CRISTELLARIA PAUCICOSTATA Cushman. 



riate49, figs. 3 a, 6. 

 Cristellaria paucicostata Cushman, Proc. U. S. Nat. Mus., vol. 51, 1917, p. 660. 



Description. — Test much compressed, composed of few chambers; 

 peripheral border with a prominent keel, the earlier portion of the 

 test with two sharp raised costae toward the periphery and parallel 

 to it, becoming obsolete on the later developed chambers; remainder 

 of surface smooth; sutures slightly depressed; aperture radiate, 

 somewhat protruded. 



Length up to 2 mm. 



Distribution. — Tj^pe specimen (U.S.N.M. No. 9138) from Albatross 

 station D5586 in 347 fathoms (635 meters), off Sibuko Bay, Borneo, 

 bottom temperature 44° F. (6.6° C). 



Cristellaria paucicostata — Material exaviined. 



CRISTELLARIA CREPIDULA (Fichtel and Moll). 



Plate 50, figs. 4, 5. 



Nautilus crepidula Fichtel and Moll, Test. Micr., 1803, p. 107, pi. 19, figs. g-i. 



Cristellaria crepidula d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, 

 '*Foraminifferes," p. 64, pi. 8, figs. 17, 18.— H. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 542, pi. 67, figs. 17, 19, 20; pi. 68, figf3. 1, 2.— Cushman, 

 Bull. 71, U. S. Nat. Mus., pt. 3, 1913, p. 70, pi. 29, figs. 5, 6; pi. 31, figs. 2-5. 



