The Frontal Sinuses of the Bos Buffalus. 



457 



THE FRONTAL SINUSES OF BOS BUFFALTTS. 



BY SHIRLEY HIBBERD. 



In making a sectional division of a skull of Bos buffalus, the 

 immense development of the frontal sinuses were a matter of 

 surprise, and as but few sections of heads of this and other species 

 of Bos have been published, it was thought advisable to place 

 the section in the hands of the engraver. The subjoined cut 

 is in every detail faithful to the original ; and the reader will 

 doubtless agree with the writer, that the frontal bones have a 

 strange conformation. The animal which supplied this skull 

 was full grown and of grand proportions. The horns were 

 remarkably symmetrical, and in every respect conformable to 

 the figure and description of the species in Vasey's monograph 

 of the genus Bos (p. 76). The characteristics of the species are, 

 convex forehead, horns flattened at the base, bent down, and re- 

 curved at the tip. The Arnee is said to be a variety of the 

 species with larger horns, not bent down. 



Placing the section aslant at an angle of 45°, with the 

 occipital below, we have presented to view the sawn face of 

 the section, extending through the frontal and temporal bones, 

 just above the plane of the auditory foramina, and within the 

 eighth of an inch of the foramen magnum. The brain- case is 



