Tantilla taeniata group (Wilson and Meyer, 1981; Wilson, 1983; Perez-Higareda et al., 

 1985; Campbell and Smith, 1997; Campbell, 1998; Smithe et al., 1998; Wilson and 

 McCranie, In press; Wilson et al., 1999) 

 T. brevicauda T. slavensi 



T. briggsi T. striata 



T. cuniculator T. taeniata 



T. flavilineata T. tayrae 



T. impensa T. tecta 



T.jani T. trilineata 



T.johnsoni T. triseriata 



T. oaxacae T. tritaeniata 



T. reticulata T. vulcani 



These group assignments account for 37 of the 53 species in this genus. 



Acknowledgments 



I would like to express my gratitude to Steve W. Gotte, National Museum of Natural History, 

 Arnold G. Kluge, University of Michigan Museum of Zoology, and Rainer Giinther, 

 Zoologisches Museum, Berlin, who provided me with valuable information on the type 

 material of various species o^ Tantilla housed in the USNM, MZUM, and ZMB collections, 

 respectively, and to R. Kathryn Vaughan, who did the same for the holotype of T. rubra. 

 Hobart M. Smith kindly reviewed the manuscript and offered several suggestions for revision. 



