REPTILES 213 



i2 On the Mexican border i^,. Ficimia. 



g> Ventrals 150 to 160. 



hi On the Pacific slope 18. Conlia. 



ho In the south and southwest. 



ii Color black; in Florida 26. Semiitatrix. 



i-i Color uniform brown 34. Tantilla. 



is Color gray or pale brown, some- 

 times banded 19. Sonora. 



Cs Scales in 19 rows; in the southern States. 



di Two internasals present 2. Abastor. 



do One internasal present. 



Ci Body tapering abruptly at both ends t,^,- Liodytes. 



62 Body not tapering abruptly at the ends 3. Farancia. 



C4 Scales in 21 rows; pupil vertical. 



di One row of brown spots on the back 22. Hypsiglena. 



do Two rows of brown spots on the back 35. Trimorphodon. 



C5 Scales in 25 to 29 rows 11. Elaphe. 



ba Anal plate single. 



Ci A single row of subcaudals present 21. Rhinocheilus. 



Co A double row of subcaudals present. 



di Scales in 17 rows; size large 12. Dryniarchon. 



do Scales in 19 to 25 rows. 



Ci Upper labials 7; size large 16. Lampropeltis. 



Co Upper labials 6 ; size small. 



fi Lower labials 8 20. Cemophora. 



f2 Lower labials 5 17. Stilosoma. 



ds Scales in 29 to 31 rows 14. Arizona. 



1. Carphophis Gervais. Small, non-poisonous snakes without a 

 distinct neck and with a pointed snout; no preocular; colors uniform: 

 2 species; terrestrial and burrowing. 



C. amxnus (Say). Ground snake (Fig. 116). Length 260 mm.; 

 tail 45 mm.; color brown above, pink below; eyes very small; ventrals 

 about 128: Connecticut to Florida; westward to Illinois; 

 often common, but secretive and rarely seen. 



2. Abastor Gray. Large, brightly colored snakes with 

 head not distinct from body; no preocular; ventrals about ^^^- "6. — 



. Carphophis 



180; upper labials 7: I species. amanus {from 



A. erythrogrammus (Daudin). Rainbow snake (Fig. ^°^^)- 

 114). Length 1,200 mm.; tail 160 mm.; color blue-black, with 3 

 longitudinal red stripes; abdomen red, with 2 rows of black blotches: 

 Virginia to the Gulf, in the coastal plain, in swampy, wooded places; 

 burrowing; common. 



3. Farancia Gray. Large, brightly colored snakes with indistinct 

 head; no preocular; upper labials 7; ventrals about 172: i species. 



