Description of the Fossils And Shells Collected in California

The book Description of the Fossils And Shells Collected in California was written by author William P William Phipps Blake Here you can read free online of Description of the Fossils And Shells Collected in California book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Description of the Fossils And Shells Collected in California a good or bad book?

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, fig. 49. Ovate-acute; whorls 5 rounded, cancellated ; longitudinal strife nodulous, except towards the base of body whorl ; a deep sulcus behind the beak, two upper volutions entire ; labrum striated within ; spire conical, longer than the aperture.
Locality. San Pedro. Recent formation.
The surface of this shell is roughened by a tubercle on the longi- tudinal, at each intersection of the revolving lines.
44. X. PEDROAXA, Con. , pi. , fig. 48. Subfusiform, smooth; vo- lutions rounded, spire ...conical, longer than the aperture, which is ellip- tical ; columella very regularly concave.
Locality. Occurs with the preceding. Recent formation.
This small species resembles Nassa lunata, Say, as the preceding approximate N. Trivittata, Say. This is very remarkable, as the two latter are recent shells of the Atlantic coast, associated with each other, both in the sea and in the Miocene deposits of Virginia and Maryland.
STREPHONA, Broicne. OLIVA, Lam.
45. S. PEDROAXA, Con. , pi. , fig. 51. Small, elliptical; spire conical, about equal in length to the aperture ; base of columella with a prominent fold.

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