FORAMINIFERA OF THE ATLANTIC OCEAN. 



49 



previous coil; chambers usiiall}^ six or seven in the last-formed coil, 

 inflated, short, periphery lobiilated, sutures depressed and distinct; 

 wall arenaceous, composed of fine sand and a yellowisli or reddish- 

 brown cement; aperture simple, at the ventral border of the aper- 

 tural face, sometimes with traces of a slightly devoloj^ed lip; color 

 usually yellowish or reddish brown, occasionally white. 



Diameter, up to 2.5 mm. 



Distrihution. — This is a rare species, apparently with a definite 

 distribution. The Challenger stations are three in number, 23 in 450 

 fathoms (823 meters) off Sombrero Island and 24 in 390 fathoms (713 

 meters) off Culebra Island, West Indies, and 120 in 675 fathoms (1,234 

 meters) off Pernambuco, Brazil. Flint records it from Albatross 

 station D2395 in 347 fathoms (635 meters) in the northern -j^art 

 of the Gulf of Mexico, and his material which I have examined 

 is typical. In the Albatross material I have had it lias occurred 

 at five stations, one off Central America, D2150, two in the east- 

 ern Caribbean, D2751 and II79 not far from the two Challenger 

 stations and at two stations off Brazil, D2760 and D2761, slightly 

 southward along the coast from the Challenger stations. This is 

 very similar to the distribution of Ammodiscoides turbinatus and 

 other species. It is apparently a definite faunal area for species in 

 depths of 400-1,000 fathoms (732-1,829 meters) or a somewhat wider 

 bathymetrical range. This is a large and striking species, well illus- 

 trated by Brady and by Flint and if it had a wider distribution 

 it certainly would have been recorded elsewhere. 



Haplophragmoides coronata — material examined. 



HAPLOPHRAGMOIDES RINGENS (H. B. Brady). 



Plate 9, ffg. 2. 



Trochmmnina ringcyis H. B. Br.\dy, Quart. Jouni. Micr. Sci., vol. 19, 1879, p. 57, 

 pi. 5, figs. 12a, b; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 343, pi. 40, 

 figs. 17, 18.— Goes, Bull. Mus. Comp. Zool., vol. 29, 1896, p. 33.— FLiNt» 

 Rep. U. S. Nat. Mus., 1897 (1899), p. 281, pi. 27, fig. 1.— Millett, Journ. 

 Roy. Micr. Soc, 1899, p. 365, pi. 5, fig. 14 (?).— B.\gg, Proc. U. S. Nat. Mus , 

 vol". 34, 1908, p. 129. 



Ammochilostoma ringens Eimer and Fickert, Zeitschr. Wiss. Zool., vol. 65, 

 1899, p. 692. 



Haplophragmoides ringens CvfiiiMA^ , Bull. 71, U. S. Nat. Miis,, ]>t. 1, 1910, ]>. 107, 

 fig. 166. 



121802—20 4 



