JSTOR books is an incredible resource. However, finding your way around can be a bit tricky. Here is a guide to book series which feature Pacific anthropology which may be useful for navigating the site:
ASAO Studies in Pacific Anthropology by Berghahn
Pacific Perspectives: Studies of the European Society for Oceanists, the ESFO book series by Berghahn
Person, Space and Memory in the Contemporary Pacific by… wait for it… BERGHAHN!
Pacific Island Monograph Series (PIMS) from the University of Hawai‘i Press. Much more than just anthropology, but has a lot of anthropology in it.
I’ll keep adding to this list as I discover more.