A bibliographic review of the polyplacophoran species reported from the Atlantic
Ocean was assembled. More than 1,060 lots from the marine mollusc reference collection
of the Department of Biology of the University of the Azores (DBUA – São
Miguel Island), corresponding to approx. 850 dives in all islands, were examined and
the polyplacophorans sorted and identified from 63 lots (303 specimens and 5 valves;
see Table 1). The mollusc collection of the Department of Oceanography and Fisheries
of the University of the Azores (DOP/ML – Faial Island) was also surveyed for chitons.
Specimens were studied using either a Nikon SMZ 1000 or a Leica M125 stereomicroscope
with incandescent light sources (Volpi Intralux 4100) and digital camera
attached, which fed images to a desktop computer. The taxonomic organization of
species in this list follows the morphological systematics of Sirenko (2006), which is
largely in agreement with molecular evidence (Okusu et al. 2003).