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BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



use as proposed by d'Orbigny. Eimer and Fickert proposed the 

 name Ammolagena in 1899. Iihumbler includes with this species 

 Webbinella liemisplixrica, but as Ammolagena had already been pro- 

 posed for it the name of Ammolagena, Eimer and Fickert should 

 stand and thus the generic name Webbinella is left for Webbinella 

 liemisplixrica in a restricted sense. The two species seem to be very 

 distinct, Ammolagena clavata having a proloculum and long tubular 

 chamber -with the aperture at the end of the tube. Webbinella 

 liemisplixrica consists simply of a single adherent chamber with the 

 aperture tit the rim of attachment, and there is nothing corresponding 

 to the long tubular portion seen in Ammolagena clavata. 



The two species seem to be generically distinct and one seems re- 

 lated to the Ilyperammina group and the other, Webbinella, to the 

 single-chambered Saccammininse. 



AMMOLAGENA CLAVATA (Parker and Jones). 



Trochammina irregularis, var. clavata Parker and Jones, Quart. Journ. Geol. 

 Soc, vol. 16, 18G0, p. 304. 



Trochammina irregularis (part), W. B. Carpenter, Parker, and Jones, Intr. 

 Study Foram., 1862, p. 142, pi. 11, fig. 6. 



Webbina clavata H. B. Brady, Proc. Roy. Soc. Edinburgh, vol. II, 1882, p. 711; 

 Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 349, pi. 41, figs. 12-16.— H. B. 

 Brady, Parker, and Jones, Trans. Zool. Soc. London, vol. 12, pt. 7, 1888, 

 p. 218, pi. 42, fig. 21.— J. Wright, Proc. Roy. Irish Acad., vol. 1, 1891, p. 470, 

 pi. 20, figs. 2, 3.— Goes, Kongl. Svensk. Vet. Akad. HandL.vol. 25, no. 9, 

 1894, p. 32, pi. 6, figs. 245, 246.— Chapman, Proc. Zool. Soc. London, 1895, 

 p. 18.— Goes, Bull. Mus. Comp. Zool., vol. 29, 1896, p. 35.— Flint, Rep. U. S. 

 Nat. Mus., 1897 (1899), p. 279, pi. 24, fig. 3.— Kler, Norske Nordhavs-Exp. 

 no. 25, 1899, p. 4— Bagg, Proc. U. S. Nat. Mus., vol. 34, 1908, p. 129. 



Ammolagena clavata Eimer and Fickert, Zeitschr. wiss. Zool., vol. 65, 1899, p. 673. 



Webbinella clavata Rhumbler, Arch. Protistk., vol. 3, 1903, p. 229, fig. 55 (in 

 text). 



Description. — Test adherent, consisting of an oval or pyriform 

 proloculum of fairly large size, without a floor, arching upward, thin- 

 walled, and a second tubular chamber of indefinite length, sometimes 



Figs. 86-S7.— Ammolagena clavata. X 12. 8G, two specimens attached to the surface of a 



SPECIMEN OF HIIABDAMMINA. 87, TWO SPECIMENS ATTACHED TO A COILED ARENACEOUS TEST. ALL 

 MEGALOSPIIERIC SPECIMENS. 



entirely attached ; sometimes the later part free and circular in cross 

 section; wall of fine sand grains, usually with an excess of reddish or 

 yellowish brown cement, smooth; open end of the tube serving as 

 the aperture. 



