b THE TONER LECTURES. 



mation of suture-lines which extended along the boundaries of the 

 parts to a groove along the entire length of the bone on the poste- 

 rior surface ; and that finally the observer was led to the study of 

 specimens which showed the separation of the bone by a perfect, 

 open suture. The details of the description adopted will appear 

 in the reverse order of the appearances as given above. 



The existence of a suture in the malar bone has been occasionally 

 noted in the skulls of various races. J. B. Davis/ in 1872, con- 

 tributed a short note on the subject, of which the following is an 

 epitome: The author refers to the presence of the suture in nine skulls 

 of Asiatics and negroes. The suture is often met with in the skulls 

 of the Dyaks of Borneo. It is rarely met with in modern skulls, 

 but more frequently in the skulls of ancient Europe. Prof Wenzel 

 Gruber'- subsequently enumerated twenty-one examples and gave 

 the literature of the subject. 



The collection of the Academy of Natural Sciences contains ten 

 undescribed examples of a distinct bone occupying the lower part 

 of the malar, or lying at the malo-squamosal suture. Seven skulls 

 were found which exhibited these peculiarities. No. 1255, Ostrogoth, 

 showed a separate malar bone on one side. No. 1442, Peruvian, ex- 

 hibited a separate malar ossicle at the malo-zygomatic suture, on 

 both right and left side of the skull. No. 1690, Peruvian, a dis- 

 tinct transverse suture crossed the malar bone of the right side. 

 No. 83 (Atacames), Peruvian, a transverse suture was seen on 

 the left side; a less distinct one on the right side. No. 1305, 

 Peruvian, a small ossicle was seen at the malo-zygomatic suture on 

 both sides of the skull. No. 753, Seminole, and 540, Pawnee, a 

 similar ossicle was noted on the right side. No. 4G0, Malay, exhib- 

 ited an imperfect division of one of the malar bones into two parts. 

 This specimen is not enumerated with the foregoing. In the United 



1 Journal of Anthropological Institute, vol. l,p. clvi. 

 ''Das Zwoigetheilte Jochbeine. Vienna, 1873. 



I 



