Abstract
Examination of 11 characters in Rhineura floridana reveals no sexual dimorphism and a geographic pattern of variation in only 6 characters: Lateral head scales, supralabials, infralabials, body annuli, caudal annuli having dorsal granular segments, and segments around the midbody. Two populations are identified but not separated nomenclaturally, one on the Lake Wales ridge, the other occupying the remainder of north-central Florida. It is suggested that other Florida scrub or sandhill associated reptiles such as Ophisaurus compressus, Neoseps reynoldsi, Eumeces egregius, Sceloporus woodi, Stilosoma extenuatum, and Tantilla relicta share a history of isolation and differentiation similar to that proposed for R. floridana.
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