.4 POPULAR TREATISE ON IN D J AN SNAKES. 



EXPLANATION OF THE ABBREVIATIONS USED 

 IN DIAGRAMS IV, V, and VI. 



A.S. Anterior sublinguals. 



F. Frontal. 



In. Internasals. 



Lor. Loreal. 



M. Mental. 



Na. Nasals. 



Pa. Parietals. 



Pe. Pentagonal. 



Po. Postoculars. 



Pra. Prgeoculars. 



Prf. Praefrontals. 



P.S. Posterior sublinguals. 



R. Rostral. 



S. Supraoculars. 



Su. Suboculars. 



T. Temporals. 



.1, 2, 3, etc. Supralabials. 



I, II, III, etc. Infralabials. 



