THE NAUTILUS 121(2):99-103. 2007
Page 99
A new species of GcrclieUa (Gastropoda: Cancellariidae) from
die South Atlantic Ocean off Brazil with discussion of an
undescribed species
Sihio Felipe B. de Lima
Jose Carlos N. de Barros
Departaniento de Pesca e Aqiiicultura
Unixersidade Federal Rural
de Pernambuco
Avenida Doni Manuel de Medeiros, S/N,
Dois Irmaos
52171-030. Recife. BRAZIL
sfblima@\alioo. com.br
mimdo\an4@\iJioo. com.br
Richard E. Petit
806 St. Charles Road
Noitli M)atle Beach. SC 29582-2846 USA
[email protected]
ABSTRACT
T\x-o rai^e species oi^ Cancellariidae were identified during the
stucK" of material from oceanographic dredge hauls undertaken
in 2000 b\" die fishing vessel Natureza in deep waters off the
state of Pernambuco, Brazil. The species belong to tlie genus
GerdieUa Olsson and Bayer. 1972. Gerdiella ahesi new species
is similar to Gerdiella cingulata Olsson and Bayer, 1972. as both
ha\e strong, nodular ornamentation that is coarsely cancellated
and a hea\il\' diickened, Hrated outer Hp. A second species,
GerdieUa sp., is identified based on die protoconch, cancellated
ornamentation and die presence of two columellar folds, dis-
tinguished from die species described herein by its ornamen-
tation and die absence of a subsutural keel.
Additional ket/icords: Mericella, Neogastropoda, batli\al, Per-
nambuco
INTRODUCTION
The family Cancellaiiidae Forbes and Hanley, 1851, is
represented by a large number of fossil and recent gas-
tropods distributed among diverse marine regions
throughout the \\-orld. The group inhabits subtidal to
batli\'al sandy and muddy bottoms of tropical and tem-
perate regions, with the greatest diversity found along
the eastern Pacific coast of the Americas and the central
Indo-Pacific area (Harasewych and Petit, 1982). In the
western Atlantic Ocean, the number of knowai species is
still relatively small especially with regard to the Brazihan
coast (see for instance Harasewych et al. 1992).
The genus Gerdiella Olsson and Bayer, 1972, was in-
troduced to include tliree species described by these two
authors from batii\al depths of the Florida Straits and
south of Jamaica. These species are: Gerdiella gerda
from tlie Straits of Florida, 648
Localities extracted from OCR text.
Specimen codes extracted from OCR text.
BioStor
