List of museum catalog and GenBank accession numbers for taxa examined in this study. No sequence data were obtained for N. chrysomelas and N. palatina. Abbreviations for genes are as follows: small subunit rRNA, 12S; large subunit rRNA, 16S; cytochrome-c oxidase subunit II, CoII; cytochrome-b, Cytb; exon 3 of mineralocorticoid receptor, Mlr; exon 35 and intron 35 of myosin heavy polypeptide 6α, Myh6; exon 3 of engrailed 2, En2; intron 7 of B-fibrinogen, Bfib; and intron 2 of alcohol dehydrogenase, Adh1-I2. An N/A indicates that no sequence data were available. Abbreviations for museum catalog numbers follow Hafner et al. (1997) are: University of Kansas, Natural History Museum and Biodiversity Research Center (KU), Louisiana State University Museum of Natural Science (LSUMZ), Brigham Young University, Monte L. Bean Life Science Museum (BYU), University of New Mexico, Museum of Southwestern Biology (MSB), Museum of Texas Tech University (TTU), University of California-Berkeley, Museum of Vertebrate Zoology (MVZ), and University of California, Los Angeles, Dickey Collection (UCLA). A TK number (reference number used by the TTU Robert J. Baker Genetic Resources Collection) was used when museum catalog numbers were unavailable.