102 FORAMINIFERA 



Genus AMMODISCOIDES Cushman, 1909 

 Plate 9, figures 13-15 



Genoholotype, Ammodiscoides turbinatus Cushman 

 Ammodiscoides Cushman, Proc. U. S. Nat. Mus., vol. 36, 1909, p. 424. 



Test free, consisting of a proloculum and long undivided 

 tubular second chamber, the early coils in a conical spire later 

 spreading out and becoming nearly planispiral; wall finely 

 arenaceous with a large proportion of cement, yellowish- or 

 reddish-brown, smoothly finished; aperture formed by the open 

 end of the tube. 



Recent. Western tropical Atlantic, 196-1181 fathoms. 



Genus GLOMOSPIRA Rzehak, 1888 

 Plate 9, figures 5-7 



Genotype, by designation, Trochainmina gordialis Jones and Parker 



Glo7nospira Rzehak, Verh. k. k. Geol. Reichs., 1888, p. 191. 

 Trochammina (part) Jones and Parker, Quart. Journ. Geol. Sec, vol. 



61, 1860, p. 304. 

 Ammodiscus (part) of authors. 

 Gordiavimina Rhumbler, Nachr. Ges. Wiss. Gottingen, 1895, p. 84 



(Genotype, Trochamynina squamata, var. charoides Jones and Parker). 



Test free, consisting of a proloculum and long tubular second 

 chamber winding about its earlier coils in various planes; wall 

 of fine arenaceous material with a large proportion of yellowish- 

 or reddish-brown cement; aperture at the end of the tube. 



Carboniferous to Recent. Recent species most common in 

 cool waters. Very abundant in the Pennsylvanian and in some 

 later formations. 



Genus LITUOTUBA Rhumbler, 1895 

 Plate 9, figures 20-22 



Genoholotype, Trochammina lituiforinis H. B. Brady 



Lituotuba Rhumbler, Nachr. Kongl. Ges. Wiss. Gottingen, 1895, p. 83. 

 Trochammina (part) of authors. 



Test composed of a proloculum and elongate undivided tubular 

 second chamber, the early portion close coiled in various planes, 

 the later portion uncoiled; wall arenaceous with much cement; 

 aperture formed by the open end of the tubular chamber. 



