FORAMINIFERA OF THE ATLANTIC OCEAN, 



Ammobaculites tetiuiniargo — material examined. 



(57 



Cat. 

 No. 



1047.3 



10474 

 1047.5 

 10476 

 10477 

 10480 

 10478 

 10479 



Locality. 



37 12 22 N.: 74 20 04 W. 

 39 49 SON. : 70 26 00 W . 

 39 38 00 N.: 7139 45 W. 

 39 34 15 N.; 71 41 16 W. 

 39 30 30 N.; 71 44 30 W. 

 32 54 00 N.; 77 53 .30 W . 

 29 07 30 N.: 88 08 00 W. 

 39 43 00 N.; 71 34 COW. 



CliilnKtor of 

 bottom. 



hij. m 



};n. m. .s . 



?m. m 



pii. ni. s. . .. 



hr. m 



(IS. s. bk.sp 



fcv. ni 



gn. m 



Al)undance. 



Few. 

 Few. 

 Few. 

 Rare. 

 Rare. 

 Rare. 

 Few. 

 Few. 



AMMOBACULITES REOPHACIFORMIS Cushman. 



Plate 13, fig. 6. 

 Eaplophraffmium n(j(ilutina7is H. B. Br.\dy (part, not d'Orbigny), Rep. Voy. 



Challenger, Zoology, vol. 9, 1884, pi. .32, fig. 22 (not 19-21, 23-2G). 

 Ammobaculites rcophaciformis Cushman, Proc. U. S. Nat. Miis., vol. 38, 1910, 

 p. 440. 



Description, — Test elongate, tapering, early portion consisting of 

 a few chambers planospirally coiled and mu(h compressed, making 

 up but a small portion of the test, later and by far the larger part 

 uncoiled, forming a straight linear series; circular in- transverse- sec- 

 tion, and progressively increasing in size, the last-formed one being 

 the largest, chambers fairly distiin t, sutures slightly depressed; 

 wall composed of angular fra^nents, smoothly finished; aperture 

 circular, terminal, simple, occasionally with a slight neck; color 

 usually white or gray. 



Length, up to 3.5 mm. 



Distrihition. — Originally described from the Philippine region in 

 depths of from 16-7<^ fathoms (29-148 meters) in coral-reef re<;ion3, 

 this species is now knovvm to bo widely distributed. The lack of fine ' 

 cond-reef material from the West Indies is the oidy reason for its 

 not being more wideh^ recorded here. I have it from one Albatrosa 

 station, D2641, in 60 fathoms (110 meters), bottom temperature 

 69.2° F., (20.6^ C), off the coast of Florida. There is material also 

 from the Tortugas in the Gulf of Mexico, and I have found it to be 

 common in my own dredgings in 6-10 fathoms (11-18 meters) 

 au'.ong the corrl reefs at Montego Bay, Jamaica. It is undoubtedly 

 widespread in the Bahamas, West Indies, and Florida among coral- 

 reef conditions, 



I have had material also from the coral reefs of the Hawaiiai* 



Islands. 



Genus HAPLOPHRAGMIUM Reuss, 1860. 



Spirolina Roemer (not Lamarck), Verst. norddeutsch. Kreide, 1840-41, p. 98. 



Haplophragmium Reuss, Sitz. Akad. Wiss. Wien, vol. 40, 1800, p. 218. (Type, 



Spirolina aequalis Roemer.) 



Descrijytion. — Test in the early portion dose coiled, planospiral, 



later becoming uncoiled and straight; chambers distinct, not laby- 



