396 



PEOF. G. ELLIOT SMITH OX THE 



the name "suprasjlvian " may be reserved for the other sulcus, of such vastly greater 

 importance, to which it often happens to be linked in the Carnivora. 



The other names are sufficiently explained by the accompanying diagrams (figs. 56 a 

 and h). One of the earliest attempts to compare this pattern of sulci— which we may 



Fig. 56a 



scr. 



1 I 

 so.^dsca. 



sps. 



sep. 



pi". ."6 a. — Fcli>: domestka. • Dorsal aspect uf bi'n,iii. Xat. size. 



Pin-. 5(; /,. — FlVis ilomesiica. Lateral aspect of the left cerebral hemisphere. Nat. size. 



regard as the common Mammalian plan — Avith the sulci of Man and the Apes was tliat of 

 Pansch *. He regarded the iipper of the three curved sulci on the lateral aspect of the 

 Doo-'s brain (/. e., presumably the conjoint lateral and coronal sulci) as the boundary 

 of the postcentral convolution {i. e., presumably the intraparietal sulcus of Turner, 

 the "interparietal" sulcus of most Continental writers). The middle and low^er curved 

 sulci (i. e., the suprasylvian, postsylviin, and ecto.sylvian) are not represented, according 

 to this writer, in the brain of the Primates. 



In Owen's ' Anatomy of Vertebrates,' 1868, the orbital (presylvian) sulcus is regarded 

 as part of the Sylvian fissure. 



Hitzig, as the result of a physiological investigation into the distribution of the motor 

 areas in the Dog and Ape, came to the conclusion that the central sulcus of the 

 latter is represented in the former by the ansate and the anterior part of the suprasylviau 

 sulci f. 



In another memoir by Pansch the orbital sulcus of the Carnivora is regarded as the 

 representative of the precentral sulcus of Apes : the suprasylviau [iu his foi-mer paper it 

 was the corono-lateral] corresponds to the intraparietal, and the coronal sulcus to the 

 central (Rolando's) J. 



Meynert, who committed the extraordinary error of thinking the crucial sulcus [ivhieh 



* " Ueber d. t)-pische Aiiordung d. Purchen u. 'Wiiiduiigcn nuf deu Grosshirnhemisphiiren der Menscben u. der 

 Affen," Arch. f. Anthropologic, Bd. iii. p. 227 (1SG8). 



t ' Untersuohungeii iiber das Gehirn.' Leipzig, 1S74. 



X " Ueber gleichwerthige Regioiiou am Grosshirn der Cariiivoren uud der Primatcu," Ceiitralb. f. d. med. 

 Wissenscli. no. 31, p. 041 (1S75). 



