ORTMANN : TERTIARY INVERTEBRATES. 163 



Height, 8 mm ; diameter, 6.5 mm. 



Record of specimens : Mouth of Santa Cruz River, 6 sp. 



Distribution: Jegua quemada, Suprapatagonian beds (Cossm.). 



Affinities: Cossmann compares this species with the French Eocene 

 species L. obtusalis Baud, and L. montensis Br. & Corn., but it differs con- 

 siderably from them. 



Gen. SOLARIELLA Wood. 

 94. SOLARIELLA DAUTZENBERGI Cossmann. 



PI. XXX, Fig. u"-". 

 1899 S. d. Cossmann, in : Journ. Conchyliol., p. 8 (of sep. cop.), pi. 10, f. 14. 



Shell small, conical ; spire short, scalariform. Whorls with two spiral 

 angulations, a little concave between them ; upper part, above upper an- 

 gulation, horizontal, lower part, below lower angulation, vertical. Whole 

 surface (aside of these angulations) with fine revolving striae, 3 on upper 

 part, 4-6 on the middle (concave) part, and 3 on the lower. Angulations 

 distinctly granulated (in well preserved specimens), and very fine and in- 

 distinct granulations are sometimes seen on the striae, especially in the 

 middle part of the whorls. Last whorl with an angulation on the periphery. 

 Base plane, with 7-9 revolving striae, and a stronger and beautifully granu- 

 lated rib near the deep umbilicus. Fine revolving striae are also present 

 within the umbilicus, where they are finely and indistinctly granulated. 



Height, 6 mm ; diameter, 7 mm. 



Remarks : Cossmann does not mention the granulations of the angula- 

 tions of the upper whorls, and describes, within the umbilicus, only obtuse 

 crenulations, but I think, in his specimens, these fine ornaments were worn 

 off, as is also the case in two of ours. 



Record of specimens: Mouth of Santa Cruz River, 4 sp.; Lake Pueyr- 

 redon, 600' above base, i cast. 



Distribution: Jegua quemada, Suprapatagonian beds (Cossm.). 



Affinities: Trochus stoliczkai Zittel (1864, p. 40, pi. 15, f. 7), from the 

 Miocene (Pareora, Hutton, 1873, p. 15), of New Zealand seems to repre- 

 sent this form in New Zealand : but the whorls are more rounded, and not 

 so distinctly angular, and the fine revolving striae are lacking. 



Cossmann compares this species with the "Eocene Solariellce" from 

 Paris, from which it is said to differ in the lack of granulations : but as we 



