The collection entry says this is a seated female figure, but the label says male. Check out some more examples of Xochipilli on Google images.
Collected by William Bullock
“Jean-Henri Marlet03” by Jean-Henri Marlet (1770-1847) – http://www.dsloan.com/Auctions/A23/item-bullock-le_mexique-1824.html. Licensed under Public Domain via Wikimedia Commons.
Excavated in Mexico
Currently displayed in Room 27, Ground Floor, British Museum
Acquired by the British Museum in 1825
Basalt? Volcanic stone
Height: 55 cm
Width: 32 cm
Two top images © Trustees of the British Museum
Let us know if you spot any clangers.