sciNCin.r.. 53 



Mabuia aenea Gray, 1845. 



Supranasals separate; parietals separate; nuchals one 

 pair; four supraorbitals; live labials in front of the sub- 

 orbital, sometimes four; scales feebly striate, in twenty- 

 eight to thirty rows, fifty-four to fifty-eight from chin to 

 vent. 



St. Vincent: Grenada; Trinidad. 



Mabuia agilis lladd. ; Fit::. 



Supranasals in contact ; parietals in contact ; nuchals 

 one pair; four supraorbitals; four labials in front of sub- 

 orbital : scales in thirty rows, striae faint, fifty-four to fifty- 

 six scales from chin to vent. 



Rio Janeiro, Para and Villa Bella, Brazil. 



Mabuia aurata Schn.; Ptrs. 



Supranasals usually separated : parietals in contact ; 

 nuchals one pair ; four supraorbitals : four labials in front 

 of the suborbital; scales smooth, in twenty-eight to thirty 

 rows, fifty-eight to sixty-two from chin to vent. 



Rio Janeiro and Goyaz, Brazil, to Turbo, Chagres River 

 and Nicaragua on the Isthmus. 



The specimens from which the foregoing notes have 

 been taken are in the Museum of Comparative Zoology 

 at Cambridge, Mass., V . S. A. 



