Type: journal article

Article abstract: The phylogenetlc relationships DI the Santa Catalina Island rattleless rattlesnake. Crolalus catalmensis, are investigated using allazyme data from 27 presumptive gene loci. These data indicate that C. catalmensis shared a mast recent common ancestor with C. ruber, and suggest thal convergence in morphological characteristics has resulted In confllctlng hypotheses 01 phylogenetic affinllie5. Analysis 01 rates 01 allozyme evolutlon In other reptilian taxa indicates that C. calalinensis IS 01 more recent origin than most other reptllian species on Isla Santa Catalina.