2 BUULETIN 104, UNITED STATBS NATIONAL MUSEUM. 



The classification of the family and the various genera used in an 

 earlier work ^ is here followed. The need for these changes seems very- 

 evident on a further study of the material from the Atlantic. The 

 idea of keeping separate the agglutinated tests from others of similar 

 form but of secreted calcareous material is also strengthened by 

 further study. 



As already noted in the previous part on the Astrorhizidae the 

 distribution of certain species seems to be very limited. Certain 

 species described from the European side of the Atlantic have not 

 been found on the American side, and the reverse is true in a few 

 cases. Certain of the species of the western Atlantic seem to be 

 related to those of the Indo-Pacific. 



Subfamily 1. ASCHEMONELLINAE. 



Test composed of agglutinated material, divided irregularly into 

 chambers without definite plan of arrangement. 



Both species of Ascliemonella from the Atlantic are identical with 

 those from the Pacific and are primitive in character. The irregu- 

 larly placed apertures and the budding off of new chambers with- 

 out definite arrangement are both primitive characters, and on this 

 basis are separated from the rest of the family. 



Genus ASCHEMONELLA H. B. Brady, 1879. 



Astrorhiza (part) Norman, Proc. Roy. Soc, vol. 25, 1876, p. 213. 



Ascliemonella H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 42. — 

 BtJTSCHLi, in Bronn, Klassen und Ordnungen des Thierreichs, vol. 1, 1880, 

 p. 195.— Chapman, The Foraminifera, 1902, p. 126.— Cushman, Bull. 71, 

 U. S. Nat. Mus., pt. 1, 1910, p. 80. — Type, Ascliemonella catenata (Norman) = 

 Astrorhiza catenata Norman. 



Description. — ^Test free, composed of a number of tubular or inflated 

 chambers in a single or branching series, size and form irregular, walls 

 arenaceous, firm, thin, apertures often several at the end of the 

 tubular necks. 



The following species are recorded from the Atlantic, both being 

 essentially deep-water species: 



ASCHEMONELLA RAMULIFORMIS H. B. Brady, 



Plate 1, fig. 1. 



Aschemonella ramuliformis H. B. Brady, Rep. Voy, Challenger, Zoology, vol. 9. 

 1884, p. 273, pi. 27, figs. 12-15.— Cushman, Bull. 71, U. S. Nat. Mus., pt, 

 1, 1910, p. 81, fig. 110.— Pearcy, Trans. Roy. Soc. Edinburgh, vol. 49, 1914, 

 p. 1005. — -Heron-Allen and Earland, Trans. Zool. Soc. London, vol. 20, 

 1915, p. 610, pi. 46, figs. 18, 19. 



Descnption. — "Test free, elongate; forming an irregular, more or 

 less branched, sometimes segmented tube, with numerous apertures, 

 lateral and terminal. Walls very thin, but hard and firmly cemented; 



» Cushman, Foraminifera of the North Pacific, Bull. 71, U. S. Nat. Mus., pts. 1-6, 1910-1917. 



