No. 44«-] 



PARIETAL DIV/S/OA. 



made a slight bend backward and ended a short distance anterior 

 to the squamo-mastoid junction. The right chvision l)cgan one 

 mm. posterior to that on the left and running a inucli niorc 

 angular course terminated in the same relati\ e position as that 

 in the opposite parietal (Fig. 3). 



2. Cebiis apella, male, adolescent (No. 59,298, Dept. of 

 Biol., U. S. N. M.). Skull slightly asymmetrical, surface of 

 bones irregular (rachitis.?). No injury. On the left side a 

 serrated, vertical-oblique suture separates a large portion of the 

 antero-inferior angle of the parietal. The anomalous suture 

 begins anteriorly 10 mm. from the point where the roional 

 meets the fronto-malar suture (there is a bilateral malo-parictal 

 articulation), and 36 mm. from the bregma; it ends interiorly 

 14 mm. posterior to the meeting of the malo-parietal uitli the 

 spheno-parietal suture and 51 mm. anterior to the astenon. On 

 the right side 14 mm. above the point of meeting of the coronal 

 and the frontal suture is a small v cleft in the parietal and fr^ )in 

 this runs backward and slightly downward a 4.5 mm. long fissure. 

 On the same side exists a 13 mm. long, slightly wavy, vertical 

 fissure in the frontal squama. It rises vertically from the fronto- 



malar suture and reaches the frontal part of the crest ot tin 

 temporal muscle. There is no trace of any violence that migh 

 account for this fissure. (Fig. 4.) 



The total number of ape, monke)", and lemur skulls e.\amine( 

 in the U. S. National Museum was 316. A large majority o 

 these skulls are those of adults, but no specimen was eonsuleret 

 in which all the normal sutures of the cranial vault weie no 



