228 "TERRA NOVA" EXPEDITION. 



dift'eriug from the Crag specimens in having the acute peripheral edge of the 

 type. In the N.Z. specimen of var. jamforniis all the chambers are visible on 

 the flattened face, while on the other, the umbilical recess is covered with 

 the strong tuberculations which generally characterize the species in this area. 

 [Arenaceous isomorph. of var. janiformis, Haplophragmium nanum, Brady.] 



616. Nonionina scapha (Fichtel and Moll). 



Nautilus scapha, Fichtel and Moll, 1798, TM. p. 105, pi. xix, fig.s. rf-/. 

 Nonionina ., Heron-Allen and Earland, 1914, etc., FKA. 191.5, p. 731. 



Stations 5-9. 19. 31 (+R. d. J., D.). 



Poorly represented at the Stations. All the specimens are small and pauper- 

 ate, tending sometimes in the direction of excessive prolongation, approaching 

 A^ sloanii (0. 1839, FC. p. 46, pi. vi, fig. 8) and others, in the direction of the 

 turgid, evolute form figured by Brady (1884, FC. pi. cix), fig. 16. 



617. Nonionina communis, d'Orbigny. 



Nonionina communis, d'Orbigny, 1826, TMC. p. 294, no. 20. ; 1846, FFV. p. 106, pi. v, figs. 7, 8. 

 Terrigi; 1880, SGP. p. 218, pi. iv, figs. 75, 76. 



Stations 2, 6, 18, 26, 45, 48, 53. 

 Very rare. Occasional specimens only. 



618. Nonionina tunjida (Williamson). 



Rotalina lurgida, Williamson, 1858, RFGB. p. 50, pi. iv, figs. 95-97. 

 Nonionina turgida, Cushman, 1910, etc., FNP. 1914, p. 29, pi. xv, fig. 3. 



Stations 2, 3, 6, 8-10, 26, 27. 31, 48 ( + R. d. J.. D.). 



Fairly frequent, the best and most abundant at Station 27. In addition 

 to the normal type, a very long form, representing a N. turgula variation of 

 N. sloanii, occurs at several Stations, particularly at Station 6. 



619. Nonionina turgida, var. arenacea, nov. PI. VII, figs. 36-38. 

 Station 26. 



A single individual, built up of very fine sand-grains and ferruginous cement 

 Surface smooth, but not polished. Septation very obscure, resembling the hyaline 

 type. 



Size: — Length, •37mm.; breadth, •22mm.; maximum thickness, •20mm. 



620. Nonionina pauperata, Balkwill and AVright. 



Nonionina pauperata, Balkwill and Wright, 1885, DIS. p. 353, i^\. xiii, figs. 25, 26. 

 Heron-Allen and Earland, 1914, etc., FKA. 1915, p. 732. 



Stations 4-6. 



Perfectly typical specimens at Stations 5 and 6. 



