JAN 2 6 2000 B R E V I O Ii.A Nl niseMnn oi V^onnparative /^oology .RD SITY us ISSN 0006-9698 Cambridge, Mass. 21 September 1999 Number 507 DEEP-SEA PELAGIC FISHES FROM THE AZORES (EASTERN NORTH ATLANTIC) DEPOSITED IN THE MUSEUM OF COMPARATIVE ZOOLOGY FiLIPE M. PORTEIRO,' KaRSTEN E. HaRTEL," James E. Craddock,--^ and Ricardo S. Santos' Abstract. The meso-and bathypelagic fishes collected by the Woods Hole Oceanographic Institution from the Azores Economic Exclusive Zone and stored at the Museum of Comparative Zoology are reviewed and show a total of 9,260 specimens from 120 collections composing 153 species in 56 families. Twenty-eight species in 12 families are new to the area and are documented here in detail. A full list of all species and localities is included. INTRODUCTION The mesopelagic and bathypelagic fishes account for more than 35% of the total number of species reported from the Azores (Santos et ai, 1997). These two groups are diverse in the area, and various species can be found in the open ocean as well as in the narrow regions around the islands. Interest in understanding the oceanography of the Azores re-sulted in a number of research programs in the region over the past 150 years. However, it was only with the expeditions of Travailleur and Talisman (Vaillant, 1888) that detailed reports on ' Departmento de Oceanografia and Pescas, Universidade dos Acores, PT-9900 Horta (Acores) Portugal, [email protected] -Museum of Comparative Zoology, Harvard University, Cambridge, MA 02138, USA. 3 Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA.