FORAMINIFERA OV THE ATLANTIC OCEAN. 17 



REOPHAX NODULOSUS H. B. Brady. 



Plate 5, figs. 2, 3. 



Reophax vodxdosvs 11. B. Bkady, Quart. .Touin. Micr. Sci., vol. 19, 1879, p. 52, 

 pi. 4, figs. 7, 8: Denkschr. Akad. Wiss. Wien, vol. 42, 1881, p. 99; Rep. Voy. 

 Challenger, Zoology, vol. 9, 1884, p. 294, pi. 31, figs. 1-9.— Toutkowski, 

 Zap. Kievsk. obshch. Est., vol. 9, 1888, p. 5, pi. 2, figs. 2«, 6.— Egger, Abh. 

 Bay. Akad. Wiss. Miinchen, vol. 18, 1893, p. 256, pi. 4, figs. 5-7, 12, 13 (?).— 

 Goes, Kongl. Svensk. Vet. Akad. Handl., vol. 25, No. 9, 1894, p. 26, pi. 6, 

 figs. 187-191.— Chapman, Proc. Zool. Soc. London, 1895, p. 15.— Goes, 

 Bull. Mus. Comp. Zool., vol. 29, 1896, p. 27.— Flint, Rep. U. S. Nat. Mus., 

 1897 (1899), p. 274, pi. 18, fig. 4.— Cushman, Bull. 71, U. S. Nat. Mua., 

 pt. 1, 1910, p. 87, fig. 122.— Pearcey, Trans. Roy. Soc. Edinburgh, vol. 

 49, 1914, p. 1006. 



Description. — Test elongate, tapering, straight or slightly curved, 

 composed of several (up to 20) chambers, but usually less than 12, 

 pyriform in shape, widest near tlie basal end and thence tapering 

 toward the apertural end, chambers gradually increasing in length 

 and diameter as added, wall in short chambered specimens rough, 

 in those with elongate chambers usually neatly finished on the 

 exterior, composed of sand grains with a reddish-brown cement; 

 aperture fairly large, circular; color reddish or yellowish brown. 



Length up to 25 mm. 



Distribhtioji. — -From the available records this species is very widely 

 distributed. In the published figures there is a wide range of form 

 shown. From the Albatross material it has not been abundant 

 except at a few stations in the Gulf of Mexico, but there are scattered 

 specimens from other stations. From this material it seems worthy 

 of note that different areas show rather constant differences in form 

 and size. The very large specimens figured by Brady were obtained 

 by the Ghallenger near the Antarctic ice barrier, and it is noteworthy 

 that Pearcey also found specimens over an inch in length in the 

 Antarctic material of the Scotia. 



Although reaching such a splendid development in the Antarctic, 

 there is no such corresponding development in the Ai'ctic, where it is 

 not even given as a characteristic species by Awerinzew or in other 

 lists from this region, although mentioned by Brady as occurring 

 off Franz Josef Land. Even in the comparatively meager material 

 I have had there seems to be at least three distinct forms, with an 

 indicated corresponding distribution. Except in the Gulf of Mexico 

 and at one or two other stations, specimens are not abundant enough 

 for a definite working out of the problem at the ])resent time. In 

 the deep water of the Philippine region from which I have had con- 

 siderable material the form of the species is entirely different from 

 that of the Atlantic and of the western Pacific, and altogether it is 

 strongly indicated that there are several varieties and perhaps species 

 included under this name. 

 121,S02— 20 2 



