ORTMANN I TERTIARY INVERTEBRATES. 
Height, 8 mm; diameter, 6.5 mm. 
Record of specimens: Mouth of Santa Cruz River, 6 sp. 
Distribution: Jegua quemada, Suprapatagonian beds (Cossnx). 
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. 1 EX 
1899 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, 1 cast. 
Distribution: Jegua quemada, Suprapatagonian beds (Cossnx). 
Affinities: 7 roc h us 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 
