摘要：Three specimens of the rare Sinaloan Long-tailed Rattlesnake, Crotalus stejnegeri, were obtained fromConcordia, southern Sinaloa, Mexico. Morphometric and scalation data were compared with information availablefrom recent literature, and aspects of geographical distribution, legal protection, activity patterns, coloration, and rattlesound are briefly discussed. These new records extend the lowest elevation limit for this species to 400 m and themaximum known total length to 79.0 cm.
