ORTMANN I TERTIARY INVERTEBRATES. 175 



Height, 12 mm; diameter, 3 mm (v. Ihering gives: height, 5; diam- 

 eter, 1.5; Cossmann: height, 7; diameter, 1.5 mm). 



Remarks: V. Ihering's figure is given as half natural size, but it is 

 according to the measurements given about 8 times enlarged. 



Cossmann's description differs from v. Ihering's only in that he men- 

 tions an indistinct fold on the columella, which may have been overlooked 

 by v. Ihering. (Cossmann calls it "hardly visible.") This fold exists in 

 our individual, but, indeed, it is hardly noticeable. It is situated well up- 

 ward on the columella. Cossmann says it is situated in the lower part, 

 but it is to be remarked that he turns all his shells upside down ; in his 

 figure something like a columellar fold is visible, situated exactly as in 

 our individual, but the figure is too poor to make sure whether this is 

 really this fold. 



The spiral striae are hardly visible in our specimen. 



Record of specimens : Mt. of Observation, upper horizon, i sp. 



Distribution: Suprapatagonian beds of La Cueva (v. Ih.) and Jegua 

 quemada (Cossm.). 



Affinities: According to Cossmann, this species differs from those of 

 the Eocene of Paris in being much more conical, that is to say, apparently, 

 being less slender. I can, however, hardly support this view, since many 

 of the Eocene species do not differ at all in form from the Patagonian 

 species (see Deshayes, 1864, pi. 20 and 21). It is hard to say to which 

 one of the numerous Tertiary Turbonillce the present species bears the 

 closest resemblance. 



Earn. SCALARIIDA1 Brod. 



Gen. SCALARIA Lmck. 

 107. SCALARIA RUGULOSA Sowerby. 



PI. XXXI, Fig. ii". 



1846 S. rug. Sowerby, in: Darwin, Geol. Observ. S. Amer., p. 255, pi. 



3, f- 42, 43- 



1864 S. lyrata Zittel, Novara Exp. Geol., p. 41, pi. 9, f. 8. 

 1864 S. browni Zittel, ibid., p. 42, pi. 9, f. 9. 



1873 S. browni & lyrata Hutton, Catal. Tert. Moll. Ech. N. Zealand, p. 9. 

 1885 S. browni & lyrata Hutton, in : Quart. Journ. Geol. Soc., v. 41, p. 550. 



