This pic was taken, by myself, from the steps of the Philadelphia Museum of Art, made famous by the movie `Rocky`. ... Found on http://en.wikipedia.org/wiki/Xylocopa
(from the article `carpenter bee`) ...first hollows out and then packs with pollen and eggs. A number of individual cells are placed in a row, separated by thin partitions of wood ... Found on http://www.britannica.com/eb/a-z/x/3
Xy·loc'o·pa noun [ New Latin , from Greek ... cutting wood; xy`lon wood + ... to cut.] (Zoology) A genus of hymenopterous insects including the carpenter. See Carpenter bee , under Carpenter . -- Xy*loc'o*pine adjective Found on http://www.encyclo.co.uk/webster/X/3