N. A. REPTILES AND BATRACHIANS. 



11 



KHIZODONTA. 



CROCODILIDAE. 



CROCODILUS Grouow, 175G, Mus. Iclith.,II, 74,-1763, Zooph., 1, 

 10. 

 C. acutus Cuv., 1807, Ann. Mus., X, 55. 



South America ; West Indies ; Florida. 

 C. pacificus Boc, 1870, Miss. Sei. Mex., Rept., 31. 

 Mexico ; Ecuador. 



ALLIGATOR Cuv., 1807, Ann. Mus., X. 



Crocodilus mississippiensis, Daud., 1805, Rept., TI, 412. 

 North Carolina to Mexico. 



SAUEIA. 



1 Rostral. 



2 Supranasals. 



3 Internasal. 



4 Prefrontals. 



5 Frontal. 



6 Postnasals. 



7 Nasals. 



8 Loreais. 



9 Preorbitals. 



10 Labials. 



EÜMECES FASCIATUS. 



11 Postorbitals. 



12 Temporals. 



13 Supraciliaries. 



14 Frontoparietals. 



15 Interparietal. 



16 Parietals. 



17 Occipitals. 



18 Supratemporals. 



19 Infralabials. 



20 Submentals. 



