ORTMANN : TERTIARY INVERTEBRATES. 2 19 



Gen. UROSALPINX Stps. 

 147. UROSALPINX ELEGANS Ortmann. 



PI. XXXIV, Fig. 9. 

 1900 U. e. Ortmann, in : Amer. Journ. Sci., v. 10, p. 376. 



Shell ovato-fusiform ; whorls 5-6, convex, with spiral striae and 7-8 

 longitudinal variciform costas, which are rounded. Mouth oval, elongated 

 into an open, but narrow canal, which is about as long as the mouth. 

 Outer lip distinctly crenulated within. 



Height, 16.5 mm ; diameter, 8 mm. 



Remarks: This species closely resembles Triton leucostomoides of 

 Sowerby (1846, p. 260, pi. 4, f. 64 = Fusiis sowerbyanus Philippi, 1887, 

 p. 48, pi. 3, f. 1 6), but appears to be more slender than the latter, and the 

 number of ribs is smaller (8 against 12 in T. leucostomoides, according to 

 Philippi), and the ribs are accordingly more distant from one another. 



As to the genus Urosalpinx szz: Ball, 1890, p. 147, v. Ihering, 1897, 

 p. 297, and Cossmann, 1899, p. 18. 



U. leucostomoides Cossmann is different from Sowerby's species. 



Record of specimens : Mouth of Santa Cruz River, 3 sp. 



Affinities: U. leitcostomoides (Sow.) is closely allied; it is found, 

 according to Sowerby and Philippi, in the Navidad beds of Chili, and 

 according to v. Ihering (1897, p. 321), in the Suprapatagonian beds. V. 

 Ihering does not give any particular locality, nor does he give any additional 

 description or figure, so that it is impossible to control his identification. 



Murex lamelliferoi Philippi ( 1 887, p. 56, pi. 3, f. 22) from the Navidad beds 

 of Matanzas, Chili, also resembles this species, but it has spiral striae only 

 in the upper part of the whorls, and the external form is a little different. 



148. UROSALPINX COSSMANNI Ortmann. 



PI. XXXIV, Fig. lo"". 



1899 U. cf. leucostomoides Cossmann, in: Journ. Conchyl., p. 17 (of sep. 

 cop.), pi. 10, f. 7. 



1900 U. cossmanni Ortmann, in: Amer. Journ. Sci., v. 10, p. 380. 

 Shell small, fusiform. Whorls 6, convex, suture deep; surface orna- 

 mented with spiral cords, 5 of which are exposed on the upper whorls ; 



