72 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



Distribution. — Brady records this species from but one North Pa- 

 cific station, in 95 fathoms, near the Philippines. The other stations 

 from which he records it are off Kandavu, Fiji, in 250 fathoms, and off 

 Sombrero, West Indies, in 450 fathoms. 



There are two specimens in the Albatross material from station 

 D4781, in 482 fathoms, near the Aleutian Islands, which certainly 

 sfeem to be this species. If this is the case the distribution is a very 

 peculiar one. Except that the final stages are not entirely complete, 

 the two specimens fit the figure and description excellently. 



Genus CLAVULINA d'Orbigny, 1826. 



Clavulina d'Orbigny (type, C. parisiensis d'Orbigny), Ann. Sci. Nat., vol. 7, 1826, 

 p. 268.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 393. 



Verncuilina (part) Parker and Jones, Quart. Journ. Geol. Sci., vol. 16, 1860, p. 

 303.— Broeck, Ann. Soc Belgique Micr., vol. 2, 1876, p. 136. 



Valvulina (part) Parker, Jones, and H. B. Brady, Ann. Mag. Nat. Hist., ser. 3, 

 vol. 16, 1865, p. 35. 



Description. — Test free, elongate, cylindrical, or angled; early por- 

 tion consisting of a number of chambers arranged triserially; later 

 portion consisting of numerous chambers arranged uniserially; walls 

 arenaceous, usually smooth; aperture in early chambers with a 

 valvular tooth; in the later portion aperture central or nearly so, 

 rounded, and with or without a tooth. 



This genus includes those species of Textulariidse which have a 

 triserial early portion and the adult portion uniserial. Such species 

 are clearly related to such forms as Valvulina and have added to the 

 characters of that genus the uniserial condition. By acceleration of 

 development the triserial stage has become very short in comparison 

 to the entire test and is only seen at the beginning of the devel- 

 opment; the uniserial stage has come to occupy most of the test. 

 The genus is known in the Tertiary and from that period to the 

 recent seas. 



There are a few widely scattered species, for the most part best 

 developed about the shores of oceanic tropical islands, such as the 

 West Indies. Other species are characteristic of rather deep water 

 and are widely distributed. 



CLAVULINA COMMUNIS d'Orbigny. 



Clavulina communis d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 268; For. Foss. 



Vienne, 1846, p. 196, pi. 12, figs. 1,2. — Brady, Rep. Voy. Challenger, Zoology, 



vol. 9, 1884, p. 394, pi. 48, figs. 1-13.— H. B. Brady, Parker, and Jones, 



Trans. Zool. Soc. London, vol. 12, 1888, p. 220, pi. 42, fig. 11.— Egger, Abh. 



kon. bay. Akad. Wiss. Munchen, CI. n, vol. 18, 1893, p. 275, pi. 6, figs. 42, 43.— 



Goes, Kong. Svensk. Vet, Akad. Handl., vol. 25, No. 9, 1894, p. 40; Bull. 



Mus. Comp. Zool., vol. 29, 1896, p. 36, pi. 4, figs. 9-15.— Flint, Ann. Rep. 



U. S. Nat. Mus., 1897 (1899), p. 288, pi. 34, fig. 3.— Millett, Journ. Roy. 



Micr. Soc, 1900, p. 12. — Chapman, Journ. Linn. Soc. New South Wales, vol. 



30, 1907, p. 29, pi. 3, fig. 66. 

 Verneulina communis Jones and Parker, Quart, Jour. Geol. Soc, vol. 16, 1860, 



p. 303.— Broeck, Ann. Soc Belgique Micr., vol. 2, 1876, p. 136, pi. 3, fig. 14. 



