In the area around the observation, both M. californicus and M. waterhousii could occur:
http://www.inaturalist.org/taxa/41146-Macrotus-waterhousii
http://www.inaturalist.org/taxa/41147-Macrotus-californicus
Great find! Common names don't mean much, but according to this site it's the California leaf-nosed bat: http://www.batcon.org/index.php/all-about-bats/species-profiles.html?task=detail&species=2441&country=43&state=9&family=all&limitstart=0
It's the only leaf-nosed bat found North of Mexico
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