Some experienced conchologists are now sinking many of the very fine species of D'Orbigny and others into the rank of varieties; and on this view we do find the kind of evidence of change which on my theory we ought to find.
We shall, perhaps, best perceive the improbability of our being enabled to connect species by numerous, fine, intermediate, fossil links, by asking ourselves whether, for instance, geologists at some future period will be able to prove, that our different breeds of cattle, sheep, horses, and dogs have descended from a single stock or from several aboriginal stocks; or, again, whether certain sea-shells inhabiting the shores of North America, which are ranked by some conchologists as distinct species from their European representatives, and by other conchologists as only varieties, are really varieties or are, as it is called, specifically distinct.
The passengers on the Philanthropist included Thomas Say (1789-1834), an American naturalist, entomologist, and conchologist
, and Charles Alexandre Lesueur (1778-1846), a French naturalist, zoologist, ichthyologist, artist, and teacher (Pitzer 1998).
Natural philosopher and empiricist Lister was the first arachnologist and conchologist
, a prominent fellow of the Royal Society, a Royal Physician to Queen Anne, a major benefactor of the Ashmolean Museum, and a regular correspondent on natural history and medicine with its first two keepers.
In the early 1920's, Paul Bartsch, a conchologist
from Washington, D.
Pfeiffer (1853) described Pupa menkeana from material in the collection of German conchologist
His articles have appeared in professional magazines and his photographs have made the front and back covers of the journal American Conchologist
a total of fourteen times.
In an article entitled "A shell from Mars" (American Conchologist
, December 2007), Peter Dance told of a Recent shell collected by a Russian trawler from a depth of about 100 meters near the coast of Somalia that was so different it was named Chimaeria (a fabled monster made up of parts of other creatures) incomparabilis by shell dealer Bruno Briano in 1993.
You will find," I told her, "that the Islands do not offer a great variety of shoreline finds for the conchologist
His circle of friends in his home town included collector Lewis White Williams, the conchologist
and mineralogist William Dell Hartman, paleontologist and gem collector Joseph Leidy (1823-1891), and Charles Pennypacker (1845-1911).
The 200-year-old signed first edition of the Universal Conchologist
, by Thomas Martyn, was sold for pounds 45,410.
He read aloud to them, stumbling through articles in journals like Indo-Pacific Mollusca or American Conchologist