SYNOPSES AND DESCRIPTIONS. 81 



CALAMARINAK. 



Body cylindrical, stout to elongate; head seldom larger than the neck, 

 comparatively short. Eve small to medium, pupil round. Usually some 

 of the head-shields united. One anteorbital, sometimes united with the 

 loreal. Not more than two postorbitals. Seales smooth or keeled, in 13 

 to 19 rows. Teeth equal and smooth, or the posterior maxillary larger 

 and grooved or smooth. 



One preocular; loreal sometimes fused with other shields; 



nasal usually grooved; loreal rarely present; rostral produced; 



anal bifid; scales smooth, in 17 rows Ficoiia. 



nasal entire; seales smooth, in 19 rows; 



anal entire; loreal present • Cheilorhina. 



nasal divided; scales smooth, in 17 rows; no loreal; 



anal bifid Stenorhina. 



nasal divided; no loreal; scales smooth, in 15 rows; 



anal divided or entire Tantilla. 



nasal entire; loreal rarely present; scales smooth, in 15 rows; 

 anal entire or divided ; post maxillary teeth larger, grooved 



Elapomorphus. 

 nasal entire or divided ; scales smooth or keeled, in 15 rows ; 

 anal bifid CoNTIA. 



Loreal and preocular united; 



nasal divided ; scales keeled ; 



anal entire NlNlA. 



nasal divided; prefrontal entering the orbit; 



anal bifid; scales smooth or keeled Virginia. 



nasal entire; rostral produced ; scales smooth ; 



anal bifid Carphophis. 



nasal divided; scales smooth; 



anal entire Geophis. 



FlCIMIA. 



Gray. 



Moderately stout, subcylindrical ; head moderate, slightly depressed; 

 tail short to medium. Teeth small, equal, smooth. Eves small to me- 

 dium, pupil round, subcircular in variegata. Head-shields seven to nine, 



Mem. — vol. n— (S 



