. Bulletin - United States National Museum. Science. GENERIC KEY. Fig. 1. Maxillary of elapid snake, showing fixed fang on anterior end of bone Fig. 2. Colubrid maxillary, all teeth uniform, no di- astema, no grooved teeth S^W^ Fig. 3* Colubrid maxil- lary, last two teeth en- larged, no diastema, no grooves poKwosa^ Fig. 4. Colubrid maxil- lary, last two teeth en- larged, diastema pres- ent, no grooves Fig. 5- Colubrid maxil- lary, diastema present, last two teeth enlarged and grooved normal, not fused Internasals fused, single plate- -17 normales, no fusionadas-
. Bulletin - United States National Museum. Science. GENERIC KEY. Fig. 1. Maxillary of elapid snake, showing fixed fang on anterior end of bone Fig. 2. Colubrid maxillary, all teeth uniform, no di- astema, no grooved teeth S^W^ Fig. 3* Colubrid maxil- lary, last two teeth en- larged, no diastema, no grooves poKwosa^ Fig. 4. Colubrid maxil- lary, last two teeth en- larged, diastema pres- ent, no grooves Fig. 5- Colubrid maxil- lary, diastema present, last two teeth enlarged and grooved normal, not fused Internasals fused, single plate- -17 normales, no fusionadas- -Pseudoeryx more than 120 18 Ventrals fewer than 120 19 fewer than I7O; maxillary teeth anter- ior to fangs 12-15 Tant ilia Ventrals more than I7O; maxillary teeth anter- ior to fangs 3"5 Elapomorphus maxillary teeth 22-25; last two without grooves Tant i 11 i ta Total maxillary teeth fewer than 21; last two w i th grooves Tant i 11a 20,Scale rows at midbody more than thirteen Scales at midbody thirteen two or three Prefrontals fused into single scale -21 Pseudablabes 22 -Tr i metoDon prefrontals Three prefrontals- 23 -Hydromorphus and prefrontals distinct- 24 Internasals fused with prefrontals, but still pa i red Elapomo jus temporals more than one- Mast i godryas 25 One anterior temporal absent; both loreal and prefrontal enter orbit ' 27 Preocular present; prefrontal does not enter orbit 2i, large; striped— Chinshields small; unicolor- -Adeloh icos Enulius 17 Internasales fusionadas, una sola lamina Pseudoeryx 18 15 mas de 120— Ventrales menos de 120- menos de I7O; dientes maxilares ante- riores a colmillos 12-15 Tant i 11a Ventrales mas de I7O) dientes maxilares ante- riores a colmillos 3-5 Elapomorphus de dientes maxilares 22-25; los dos ulti- mos sin surcos Tant i 11 i ta Total de dientes maxilares menos de 21; los dos
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