100 FORAMINIFERA 



Genus TURRITELLELLA Rhumbler, 1903 



Plate 9, figures 23-25 

 Genotype, by designation, Trochanimina shoneana Siddall 



Turritellella Rhumbler, Arch. Prot., vol. 3, 1903, p. 283. 

 Trochammina (part) Siddall, Proc. Chester Soc. Nat. Hist., pt. 2, 1878, 



p. 46. 

 AmmodiscHs (part) of authors. 

 Turritellopsis Rhumbler, Nachr. Ges. Wiss. Gottingen, 1895, p. 84 (not 



G. O. Sars, 1878). 



Test free, consisting of a proloculum and long undivided, 

 tubular second chamber, coiled in an elongate close spiral; wall 

 composed of fine sand grains and much cement, smooth; aper- 

 ture, the open end of the tubular chamber. 



Carboniferous to Recent. Recent forms in comparatively 

 shallow water but a few records from deep water. 



EXPLANATION OF PLATE 9 

 AMMODISCroAE 



Fig. 

 1-4. Amviodiscus incertus (d'Orbigny). Fig. 1, (After type figure). X 



135. a, side view; b, peripheral view. Figs. 2-4, (After H. B. 



Brady). X 10. Fig. 2, Microspheric form. Fig. 3, Showing 



interior. Fig. 4, Megalospheric form. 

 Glomospira gordialis (Jones and Parker). Fig. 5, (After type 



figure). X 35. Figs. 6, 7, (After H. B. Brady). X 50. 

 Hemidiscvs carnicus Schellwicn. X 135. (After type figures). 



Figs. 9, 10, Sections. 

 AmmmJertella inversus (Schellwicn). Fig. 11, (After type figure). 



X 135. Fig. 12, X 50. 

 Ammodiscoides turbinafus Cushman. (After type figures). Fig. 



13, a, side view; b, peripheral view. X 30. Fig. 14, Young 



stage. X 50. Fig. 15, Section. X 30. 

 Tolypatnmiva vagans (H. B. Brady). X 10. (After type figure). 

 Amrnolagena clavata (Jones and Parker). Fig. 17, (After type 



figure). X 35. Figs. 18, 19, (After H. B. Brady). X 15. 



Fig. 19, Detached specimen from lower side. 

 Litnotnba litnifor^nis (H. B. Brady). X 15. Fig. 20, (After 



type figure). Figs. 21, 22, (After H. B. Brady). 

 TurritelleUa shoneana (Siddall). X 05. Figs. 23, 24, (After type 



figures). Fig. 25, (After H. B. Brady). 

 Psammonyx vulcanicus Doderlein. (After Rhumbler). a, side 



view; b, peripheral view. Fig. 26, Microspheric form. Fig. 27, 



Megalospheric form. 



