76 



BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



Scandinavia, off the coast of South America and the Antarctic, the 

 East Indies and North Pacific. In the Albatross material it is espe- 

 cially abundant m material from the region of Georges Bank south- 

 ward to Cape Hatteras, although recorded from the Gulf of Mexico 

 and the Caribbean Sea. The material I have had from those two 

 latter regions, however, is not as typical as the east coast specimens. 

 On our east coast depths range from 390 to 1,813 fathoms and bottom 

 temperatures from 36.8° to 40.1° with one at 45.0° F. 



There seems to be a tendency here to show both megalospheric 

 and microspherio forms. The usual form is the megalospheric, 

 where the proloculum is greater in diameter than the tubular 

 second chamber, whUe in the rarer microspheric form the proloculum 

 is hardly distinguishable from the tubular chamber in diameter and 

 the whole test is somewhat larger. 



Hyperammina friabilis — ma teria I examined. 



HYPERAMMINA SUBNODOSA H. B. Brady. 



Plate 29, figs. 7, 8. 



Rhabdopleura, species, G. W. Dawson, Ann. Mag. Nat. Hist., ser. 4. vol. 7, 1871, 

 p. 86, fig. 7. 



Hypermmnina subnodosa H. B. Brady, Rep. Voy. Challenfjer Zoology, vol. 9, 

 1884, p. 259, pi. 23, figs. 11-14.— Egger, Abh. bay. Akad. Wiss. Miinchen, 

 vol. 18, 1893, p. 255, pi. 4, fig. 32.— Goes, Kongl. Svensk. Vet. Akad. Handl., 

 vol. 25, No. 9, 1894, p. 16, pi. 3, figs. 42-53 (not 54).— Schlumberger, Mem. 

 Soc. Zool. France, vol. 7, 1894, p. 254.— Rhumbler, Arch. Prot., vol. 3, 

 1903, p. 259, figs. 100a, b (in text).— Cushman, Bull. 71, U. S. Nat. Mus., pt. 1, 

 1910, p. 63, figs. 80a, b (in text).— Awerinzew, Mem. Acad. Imp. Sci. St. 

 Petersburg, ser. 8, vol. 29, No. 3, 1911, p. 12.— Pearcey, Trans. Roy. Soc. 

 Edinburgh, vol. 49. 1914, p. 1004. 



