Coronella.
Maxillary teeth subequal
Contia.
B. One or two enlarged grooved fangs behind the series of solid maxillary teeth.
14 to 17 subequal solid maxillary teeth, forming a continuous series; 21 to 23 mandibular teeth, anterior strongly enlarged
Cœlopeltis.
9 to 11 solid maxillary teeth, fourth and fifth or fifth and sixth enlarged, followed by an interspace; sixth mandibular tooth fang-like, followed by an interspace
Macroprotodon.
9 or 10 solid maxillary teeth, forming a continuous series, decreasing in length posteriorly; anterior mandibular teeth strongly enlarged
Tarbophis.