126 



BULLETIN" *71, UNITED STATES NATIONAL MUSEUM. 



Fig. 196.— Globotextularia anceps. 

 X 20 (after Brady). 



Description. — Test irregular, early portion spiral with a high spire, 

 compact, later portion with much larger globular chambers, irregular 



in position, usually four in regular speci- 

 mens in the outer volution, wall arena- 

 ceous, surface fairly smooth; aperture 

 near the inner end of the chamber; color 

 brown. 



Diameter 1.5 mm. 



Distribution. — Although not recorded 

 by Brady this species is given in the 

 volume on the "Summary of Results" 

 from Challenger station 237, 1,875 

 fathoms off Japan. There is a single 

 specimen from Albatross station H2766 in 196 fathoms off California, 

 which I have referred to this species. 



Genus AMMOCHILOSTOMA Eimer and Fickert, 1899. 



Trochammina (part) H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 58; 



vol. 21, 1881, p. 52; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 344. 

 Haplophragmium (part) H. B. Brady, Quart. Journ. Micr. Sci., vol. 21, 1881, 



p. 50; Rep. Voy. Challenger, Zoology, vol. 9, 18S4, p. 312. 

 Ammochilostoma (part) Eimer and Fickert, Zeitschr. wiss. Zool., vol. 65, 1899, 



p. 692. Type, A. pauciloculata (H. B. Brady) = Trochammina pauciloculata 



H. B. Brady. 



Description. — Test free, early chambers spiral, later ones very 

 involute and the last-formed volution often entirely covering the 

 previously formed chambers and usually at an oblique angle to the 

 earlier growth; wall arenaceous with a variable amount of cement; 

 aperture at or near the base of the apertural face of the chamber, 

 elongate, narrow. 



This name was proposed by Eimer and Fickert for three species of 

 Trochammina,, T. ringens, T. galeata, and T. pauciloculata. As the 

 first of these species has already been included under Haplophragm- 

 oides, this name, Ammochilostoma, will stand for the other two species 

 with others which in their last-formed volution become involute or 

 irregularly winding about the test in a changing plane. 



AMMOCHILOSTOMA PAUCILOCULATA (H. B. Brady). 



Trochammina pauciloculata H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, 

 p. 58, pi. 5, figs. 13-14; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 344, pi. 

 41, 'figs. 1, 2.— Egger, Abh. kon. bay. Akad. Wiss. Munchen, vol. IS, 1893, p. 

 265. pi. 5, figs. 37, 38.— Goes, Bull. Mus. Comp. Zool., vol. 29, 1896, p. 33.— 

 Flint, Ann. Rep. U. S. Nat. Mus., 1897 (1899), p. 282, pi. 27, fig. 2.— Bagg, 

 Proc. U. S. Nat. Mus., vol. 34, 1907, p. 128. 



Ammochilostoma pauciloculata Eimer and Fickert, Zeitschr. wiss. Zool., vol. 65, 

 1899, p. 692. 



