Brookula argentina ( Zelaya, Absalão & Pimenta, 2006 ), Zelaya, Absalao & Pimenta, 2006

Schwabe, Enrico & Engl, Winfried, 2008, Description of two new deep­water species of the genus Brookula Iredale, 1912 (Mollusca, Gastropoda, Trochoidea), with a revision of the genus for the Subantarctic and Arctic Sector of the Atlantic Ocean *, Zootaxa 1866, pp. 187-204 : 190-191

Brookula argentina ( Zelaya, Absalão & Pimenta, 2006)

( Figs 1–2 )

Benthobrookula argentina Zelaya, Absalão & Pimenta, 2006: 79 –80, fig. 4.

Holotype ( MLP: 11977), not examined, SEM images available in Zelaya et al. (2006). Type locality: Atlantic Ocean, South Georgia (54°18’S 35°30’W), 94 m (OD).

Material examined: Five specimens ( ZSM Mol 20070902) from Antarctica , Bransfield Strait, St. PS 56/ 174–01 (63°01.10’S 61°09.10’W to 63°01.30’S 61°08.60’W), 311–365 m, collected during the ANT XVII/3 ( EASIZ III) expedition. One specimen ( ZSM Mol 20020184) from Antarctica , Bransfield Strait, St. PS 56/ 149–01 (62°30.00’S 56°55.80’W to 62°30.10’S 56°56.10’W), 909–911 m, collected during the ANT XVII/3 ( EASIZ III) expedition, leg. Michael Schrödl.

Remarks: The new material considerably extends the geographic and bathymetric range of this species that formerly was known from its type locality only ( Fig. 2).

Figures

FIGURE 1: A – D, Brookula argentina (Zelaya, Absalão & Pimenta, 2006) (ZSM Mol 20020184) from Antarctica, Bransfield Strait, St. PS 56 / 149 – 01 (62 ° 30.00 ’ S 56 ° 55.80 ’ W to 62 ° 30.10 ’ S 56 ° 56.10 ’ W), 909 – 911 m. A, Ventral view of the complete shell. B, View of the shell base showing the strong spiral cords around the umbilicus. C, Apical view. D, Detail of fig. C to show the fine protoconch ornamentation. Scale bars: 100 µm.