Content. No subspecies are recognized. Dennition. A species of Tantilka with a pale middorsal stripe occupying the middorsal row and adjacent halves of the paravertebral rows and a pale lateral stripe only slightly paler than the ground color onscalerow4 and adjacent halves of rows 3 and 5. The ground color is brown. An irregular dark brown stripe is present on the adjacent halves of rows 2 and 3. The venter is largely creamcolored. The head pattern consists of an incomplete (usually) pale

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... l collar, which crosses the posterior portion of the parietals but not the ultimate supralabial. The sides of the head are a darker brown than the dorsum and pale markings are present on the otherwise dark supralabials. Ventrals and subcaudals range from 145 to 158 and 46 to 52, respectively.