Olfactory Memory Storage and/or Retrieval Requires the Presence of the Exact Tentacle Used During Memory Acquisition in the Terrestrial Slug Limax Koga, Yurika and Matsuo, Yuko and Matsuo, Ryota, Zoological Science, 33, 78-82 (2016), DOI:http://dx.doi.org/10.2108/zs150128