TROPICAL PACIFIC FORAMINIFERA OF ALBATROSS 11 



right angles to the long axis of the test; wall rather coarsely arena- 

 ceous, but smoothly finished; aperture an elongate slit in a well- 

 marked depression of the inner border of the chamber. Length, 

 0.8-1 mm. ; breadth, 0.5-0.6 mm. 



This species was described by d'Orbigny from shore sands of Cuba, 

 and it is a typical species of the general West Indian region, occur- 

 ring in typical form at least as far back as the Miocene in Florida 

 and probably in the West Indies. It is not so common in the Pacific 

 but occurs widely distributed, especially in rather shallow water. 

 It may be distinguished from candeiana by the horizontal sutures, 

 the uniform tapering test, and the rather uniform shape of the cham- 

 bers. In the Pacific collections it has occurred at Albatross Station 

 H3961, off the south coast of Tarawa, Gilbert Islands, 413 fathoms. 

 In the shallow water material it occurs off the Fiji Islands from 

 Levuka, 12 fathoms, Mokaujar Anchorage. There are typical speci- 

 mens also from Rongelap Atoll, Marshall Islands. It is much less 

 common than candeiana. 



TEXTULARIA CONICA d'Orbigny 



Plate 2, Figures 8-10 ; Plate 3, Figures 1, 3 



Textularia conica d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, " Foram- 

 iniferes," p. 143, pi. 1, figs. 19, 20, 1839.— H. B. Brady, Rep. Voy. Chal- 

 lenger, Zoology, vol. 9, p. 365, pi. 43, figs. 13, 14; pi. 113, fig. 1, 1884.— 

 Goes, Bull. Mus. Comp. Zool., vol. 29, p. 43, 1896— Cushman, Proc. U. S. 

 Nat. Mus., vol. 59, p. 50, pi. 11, figs. 4-6, 1921 ; U. S. Nat. Mus. Bull. 100, 

 vol. 4, p. 123, pi. 25, figs. 2 a-c, 1921 ; Carnegie Inst. Washington Publ. 311, 

 p. 24, pi. 2, fig. 4, 1922 ; U. S. Nat. Mus. Bull. 104, pt. 3, p. 22, pi. 5, figs. 5-7, 

 1922 ; Carnegie Inst. Washington Publ. 342, p. 15, pi. 1, fig. 6, 1924. 



Test usually wider than high, triangular in front view, broadly 

 oval in end view, slightly compressed, apex bluntly pointed; cham- 

 bers comparatively few, distinct ; sutures distinct, slightly depressed ; 

 wall arenaceous, smooth, or slightly roughened; aperture a narrow 

 slit at the base of the inner margin of the last-formed chamber; 

 color gray. Length, 0.55-0.7 mm. ; breadth, 0.55-0.65 mm. ; thickness, 

 0.4-0.5 mm. 



D'Orbigny's original types of this species were from the West 

 Indies in shallow water, where it is common and widely distributed 

 It has been recorded from many regions both as a Recent and fossil 

 species, but an examination of the records where figures are given 

 would show that these are not all one species. Various authors have 

 referred the species to Textularia abbrevlata d'Orbigny described by 

 him from the Vienna Basin Miocene, but that species in its typical 

 form is very different from the Recent West Indian one. The species 

 occurs in our material from Rangiroa, Paumotus ; Vavau Anchorage, 

 91513—32 2 



