ART. 22 SAN PEDRO FAUNA OLDROYD. 33 



like slender lirations, and lend to the surface a reticulated appear- 

 ance. Suture well constricted. Periphery slightly angulated at the 

 early whorls, but rounded on the last. Base very narrowly um- 

 bilicated, slightly inflated, well rounded, and marked like the spire. 

 Aperture broadly oval; posterior angle acute; outer lip thin at the 

 edge, thick within; inner lip strongly curved, reflected over but not 

 appressed to the base, provided with a strong, oblique fold opposite 

 the umbilical chink; parietal wall covered with a thin callus. 



Type.— Cat No. 352523, U.S.N.M., has almost 6 postnuclear whorls 

 and measures : Length, 6 mm. ; diameter, 2.7 mm. 



Cat. No. 352524, U.S.N.M., contains 5 additional specimens from 

 the type locality, and there are 10 in the Oldroyd collection. 



This species, while it belongs to the coarsely sculptured group of 

 Evalea, does not seem to be very closely related to any of the de- 

 scribed forms. 



ODOSTOMIA (EVALEA) FITELLA, new species. 



Plate 1, fig. 8. 



Shell very regularly elongate conic, yellowish white. Nuclear 

 whorls rather large, deeply, obliquely immersed in the first of the 

 succeeding turns, above which only the tilted edge of the labt volu- 

 tion projects. Postnuclear whorls well rounded, very narrowly 

 shouldered at the summit, marked by fine lines of growth and fine 

 spiral striations. Suture slightly constricted. Periphery of the 

 last whorl slightly angulated. Base short, well rounded, somewhat 

 inflated, broadly umbilicated, marked like the spire. Aperture elon- 

 gate ovate; posterior angle acute; outer lip thin at the edge; inner 

 lip almost straight, reflected but not appressed to the base ; parietal 

 wall covered by a thick callus, which renders the peritreme complete. 



Type.— Cat. No. 352525, U.S.N.M., has 6.5 postnuclear whorls and 

 measures; Length, 5.9 mm.; diameter, 2.5 mm. 



Cat. No. 352526, U.S.N.M., contains 2 specimens from the type 

 locality, and there are 4 additional in the Oldroyd collection. 



The present species has no near relatives among the recent shells 

 so far described. 



ODOSTOMIA (AMAURA) MENZOLA, new species. 



Plate 2, fig. 6. 



Shell small, elongate ovate. Nuclear whorls obliquely immersed 

 in the first of the postnuclear turns, above which only the tilted edge 

 of the last volution projects. Postnuclear whorls slightly rounded, 

 narrowly shouldered at the summit, marked by retractively slanting 

 lines of growth and microscopic spiral striations. Suture well 



