PLEIOPTYGMATIDAE A NEW FAMILY OF MITRIFORM GASTROPODS PROSOBRANCHIA
NEOGASTROPODA
  AU:  QUINN-J-F-JR [Reprint-author]
  SO:  Nautilus-. 1989; 103(1): 13-19
  AB:  A new family of mitriform gastropods is proposed, comprising
only the genus Pleioptygma Conrad, 1863, on examination of the foregut
of P. helenae (Radwin and Bibbey, 1972). Pleioptygma helenae is the
only known Recent species of this genus, known otherwise only from
species from the Neogene of the southeastern United States. The unique
configuration of the foregut separates this group from the Mitridae,
Costellariidae, Volutidae, and Turridae. Features characterizing
Pleioptygmatidae include a proboscis introvert not connected to the
head, presence of a proboscis bulb, buccal mass divorced from the
proboscis, and hypertrophied rhachidian tooth.


--
Dr. David Campbell
425 Scientific Collections
University of Alabama
"I think of my happy condition, surrounded by acres of clams"

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