Acknowledgements
We thank Z. Chejanovski for help with fieldwork, as well as J. Breeze, C. Hahn, and M. Gage for help with lizard housing and care at Harvard University. Further, we thank the Genomics and Sequencing Center at the University of Rhode Island for help with constructing the sequencing libraries. This work was supported by the University of Rhode Island and National Science Foundation (NSF) grants (DEB-1354897) awarded to J.J.K., by NSF Graduate Research Fellowship under Grant No. 1747454 to J.N.P.A., by Belgian American Education Foundation (BAEF) to S.B., and by a Natural Sciences and Engineering Research Council of Canada Postdoctoral Fellowship, a Banting Postdoctoral Fellowship, and a Barbour award from the Harvard Museum of Comparative Zoology to D.G.B.