302 THE AMERICAN NATURALIST. [Vol. XXXVIII. 



of a new born child. Sex and race unknown. Skull hydroce- 

 phalic (Schwalbe). 



3. An antero-posterior complete divi.sion in the rif.;-ht parietal 

 in a female new born child (Frassetto). 



4. An anterio-posterior complete division in the right parietal 

 of a six months' foetus. Sex and race not given (Frassetto). 



5. An antero-posterior complete division in the right parietal 



of a four to six months' fctitus, sex and race not given (Frassetto). 



6. A separation of the mastoid angle of the left parietal in 

 an infant. Sex, age and race not given (Frassetto). 



C. In Primates.— \. .S7;;//« ^^/^m (Cercopithecus). Right 

 parietal divided into four parts. This same case, apparently, is 

 reported by both Frassetto and Le Double.^ 



