64 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



AMMOBACl'LITES AMERICANUS Cushman. 



I'lalc 12, fio;s. () aii'l 7. 



Jftijilophnigiiuiaufordinensc II. B. Brady (not If.fonlinense Terquem), Rep. Voy. 



Challenc/cr, Zoology, vol. !), 1884, p. 305, pi. 34, figs. 1-4.— Eggkr, Abh. Bay. 



Akad. Wiss. Munchen, vol. 18. 1893,' p. 261, pi. 5, fig. 47.— Goes, Bull. Mus. 



Comp. Zool., vol. 29, 1890, p. 31. — Chapman, Journ. Linn. Soc. Zoology, voL 



30, 1910, p. 401. 

 Ammobaculites americanus Cushman, ]5u11. 71, U. S. Nat. Mus., pt. 1, 1910, p. 117, 



figs. 184, 185.— Pearcey, Trans. Roy. Soc. Edinburgh, vol. 49, 1914, p. 1010 . 



Description. — Test plan()s])iral in the early portion, compre-^sed, 

 only partially involute, composed of three or four coils with about 

 nine chambers in the outer coil, the last-formed chambers in adult 

 specimens tending to form uncoiled straight growth; chambers dis- 

 tinct, sutures slightly depressedj wall of fairly coarse sand grains 

 firmly cemented; aperture elongate, oval, or forming a long slit across 

 the apertural face of the chamber; color gray. 



Length up to 2.5 mm. 



Distribution. — As II. fontinense this species is recorded by Brady 

 from the South Atlantic, Challenger station 323 east of Buenos Aires 

 in 1,900 fathoms (3,475 inoters). 



It is also known from the west coast of South America (Brady), 

 from the west coast of Mexico (Goes, Cushman), from deep water off 

 Funafuti (Chapman), and from the Antarctic (Pearcey). Egger 

 records the species from off Mauritius, but his figure would not war- 

 rant one in putting it in this species without examining the original 

 material. It is evidently a species of the South Atlantic and Pacific. 



ammobaculites FOLIACEUS (H. B. Brady). 



Plate 13, figs. 1 and 2. 



Iluplophragmiumfoliaccum H. B. Brady, Quart. Journ. Micr. Sci., vol. 21, 1881, 

 p. 50; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 304, pi. 33, figs. 20-25.— 

 Flint, Rep. u". S. Nat. Mus., 1897 (1899), p. 276, ])1. 19, fig. fi. 



Ammobaculites foliaceus Cushman, Bull. 71, U. S. Nat. Mus., pt. 1, 1910, p. 116, 

 figs. 177-179. 



Descrijytion. — Test much compressed, elongate, early portion close 

 coiled, planospiral, consisting of two or three coils; later portion 

 uncoiled, straight, uniserial; chambers distinct, sutures usually well 

 marked, but not depressed; wall coarsely arenaceous but with a 

 smooth surface; aperture in the uncoiled portion of the adult simj)le, 

 terminal, elongate; color reddish or yellowish brown. 



Length uj) to 1.25 mm. 



Distribution. — The distribution of this species from the available 

 records includes a wide area. The best Challenger material according 

 to Brady was from station 323 in the South Atlantic east of Buenos 

 Aires in 1,900 i'athoms (3,475 meters), where it was "tolerably abun- 



