REPTILES 229 



T. proximus (Say). Length 770 mm.; tail 220 mm.; body very 

 slender; dorsal stripe orange in color, lateral stripes greenish: Nebraska, 

 Iowa and southern Wisconsin to Louisiana and Texas; Mexico. 



T. sackeni (Kennicott) . Length 745 mm. ; tail 1 60 mm. ; color brown 

 or olive; lateral stripes bright yellow; dorsal stripe indistinct or absent; 

 no color blotches: Florida. 



T. radix (B. & G.) Length 800 mm.; tail 170 mm.; stripes yellow; 

 lateral stripes on the third and fourth rows of scales: the Great Plains 

 from Kansas and Missouri northwestward; very common. 



T. ordinoides (B. & G.) (T. elegans B. & G.). Length 700 mm.; 

 tail 140 mm.; ground color dark brown or black; dorsal stripe bright 

 yellow; lateral stripe faint, and on second and third rows of scales, or 

 absent; back often with regular rows of large black blotches: coastal 

 region of Pacific States; eastward to New Mexico and Wyoming. 



T. hammondi (Kennicott). Length 500 mm.; tail 150 mm.; dorsal 

 band absent and lateral bands indistinct; spots 74 to 90: southern 

 California. 



T. marcianus (B. & G.). Length 510 mm.; tail 160 mm.; color light 

 yellow, with numerous square, black spots arranged like a checker 

 board; belly white: Oklahoma and Texas to southeastern California. 



33. Liodytes Cope. Stout snakes with a distinct head and smooth 

 scales in 19 rows; caudal scales keeled; body tapering abruptly at both 

 ends: i species. 



L. alleni (Garman). Length 600 mm.; tail 135 mm.; color of back 

 dark brown; sides with a broad olive band and a darker band beneath it; 

 belly yellow, unspotted: Florida. 



34. Tantilla Baird & Girard. Very small, somewhat poisonous 

 snakes with smooth scales in 15 rows; ventrals about 150; upper labials 

 6 or 7 ; one or more pairs of grooved teeth at the rear of the upper jaw 

 through which poison is injected: many species in the southern States 

 and Mexico. 



T. coronata B. & G. Length 230 mm.; tail 40 mm.; color reddish 

 brown; Hghter beneath; head black or dark brown; upper labials 7: 

 South Carolina to Mississippi. 



T. gracilis B. & G. Length 140 mm.; tail 30 mm.; color greenish 

 brown; upper labials 6: Missouri to Texas. 



T. planiceps (Blainville) . Length 310 mm.; tail 80 mm.; color 

 brown above; head black; upper labials 7: Kansas to Texas; westward 

 to Cahfornia. 



35. Trimorphodon Cope. Medium sized, poisonous snakes with a 

 flat broad and very distinct head; hinder maxillary teeth elongate and 



