ODONTOSTOMUS. 75 



small. Peristome white, not thickened, narrowly expanded, the 

 margins joined by a thin callus. Length 21^, diam. 7, length of 

 aperture 8, width .3 mill. (Mart.). 



Argentina: <'nn!nr<i (Stelzner). 



Bidimiis (Odontostomus) leptodon r. MART., Jahrb. d. D. Malak. 

 Ges. ii, 1875, p. - 27<? PFR., Monogr. viii, p. 107. 



Probably identical with one or other of Doering's species from the 

 same district and described in the same year. In contour it stands 

 between 0. janeirensis and 0. spixii, according to von Martens. 



0. PIIIMPPII Doering. PL 12, figs. 73, 74. 







Shell rimate, fusiform-cylindrical, slender, rather solid, opaque, 

 ashen-buff, beautifully sculptured with whitish riblets a little nar- 

 rower than their interstices. Spire lengthened-turreted, rather 

 obtuse. Whorls 10^, scarcely convex, slowly increasing, separated 

 by a distinct suture, the last whorl hardly one-fourth the length of 

 the shell, with a double crest at the base, becoming pale and with 

 a pit toward the aperture. Aperture small, the peristome white, 

 thickened, margins joined by a thick callus, having 5 lamellae: the 

 first, a compressed parietal lamella, the second horizontal, at the 

 upper part of the columeila, the third strong, obliquely entering in 

 th< j basal margin, the fourth oblique and the fifth small, within the 

 outer lip. Length 17-19, diam. of-4^, length of aperture 4, width 

 3 mill. (Kobelt). 



Argentina: Cruz del Eche, near Totoral, in the Sierra de Cor- 

 dova, northern part of the Province of Cordova, on granitic hills 

 (Stelzner). 



Odontostomus philippii DOEKIXG, Apuntes etc., in Bol. Acad. 

 Ciencias, Cordoba, 1875, p. 450; Periodico Zoologico i, pt. 3, pp. 



174, 180 (1875) Bulimus (Odontostomus} philippii Doer., KGB., 



Nachrbl. 1875, p. 8; Jahrb. d. D. Malak. Ges. ix, 1882, p. 6, and 

 Bid. philippianus on pi. 1, f. 7, 7a. Bidimns philippii PFR., 

 Monogr. viii, p. G12. Bulintns (Odontostomus) doeringi KOBELT, 

 Jahrb. v, 1878, p. 135 (new name for philippii During 1875, not 

 Pfr.). 



" The most beautiful of the fusiform species, sufficiently different 

 from all others in its handsome ribbing (Kob.). The name p/iili/>/>ii 

 was not preoccupied in Odontostomus, so the change proposed by 

 Kobelt in 1878 was unnecessary. He apparently forgot or repu- 

 diated the change when treating of the species in 1882. 



