156 



CRANIA AMERICANA. 



estimable Librarian of that institution, John Vaughan, Esq. The forehead is low, 

 but not very receding ; the face projects, and the whole cranium is extremely 

 unequal in its lateral proportions. 



MEASUREMENTS. 



Longitudinal diameter, 

 Parietal diameter. 

 Frontal diameter. 

 Vertical diameter. 

 Inter-mas toid arch, . 

 Inter-mastoid line, 

 Occipito-frontal arch. 

 Horizontal periphery. 

 Internal capacity, 

 Capacity of the anterior chamber. 

 Capacity of the posterior chamber. 

 Facial angle, . . . . 



6.4 inches. 

 5.7 inches. 



4.5 inches. 



5.4 inches. 

 14.6 inches. 



4.5 inches. 

 13.5 inches. 

 20.3 inches. 



77. cubic inches. 

 30. cubic inches. 

 47. cubic inches. 

 78 degrees. 



PLATE XVIIL— A 



MEXICAN.— TLAHUICA? 



This is a female skull, obtained from Acapacingo, in the valley of Cuernavaca, 

 about fifty miles south of the city of Mexico. It was obtained and presented to 

 me by that distinguished friend and patron of science, William Maclure, Esq., 

 President of the Academy of Natural Sciences of Philadelphia. Mr. Maclure did 

 not inform me to what tribe this individual belonged ; but as Clavigero* states 



Hist, of Mexico, I, p. 7. (Cullen's Tr.) 



