HIGHLIGHTS
SUMMARY
Later, Smith and Grant recognized Liotyphlops as a genus distinct from Helminthophis, highlighting as a diagnostic character the separation of prefrontal scales in Liotyphlops, while in Helmintophis the prefrontal scales are widely in contact. Accordingly to Dixon and Kofron the presence or absence of the division and/or fusion of scales on one side of the head and not on the other has been largely ignored by most describers of Liotyphlops species, which has, therefore, resulted in poor species concepts; the only scales that appear to be consistently defined in all writings are the . . .
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