316 PHYSIOLOGICAL SERIES. 



of the coronal and so-called "splenial" sulci ; the connecting- 

 link from the latter to the suprasylvian ; the definite post- 

 sylvian sulcus, usually absent or very small in the Cotylo- 

 phora ; and the apparent origin of the " Sylvian fissure" 

 from the rhinal, whereas in the Cotylophora this so-called 

 " fissure " usually ends below in two sulci which pursue a 

 course parallel to the rhiiial fissure. 0. 0. 1328 I. 



Flatau and Jacobsohn, op. cit. 1899, p. 384. 



D. 411. A cast of the cranial cavity of Sus scrofa. [In dupli- 

 cate.] 



D. 412. The brain of a Pallas's Wart-Hog (Pliacocha-rus (ifltio- 

 picus) (figs. 182, 183, 184). 



In most respects the brain of the Wart-Hog resemblo 

 that of the Pigs, but it exhibits some peculiar features. 



Fig. 182. (x.) 



SULC.COR. 



SULC.SUPRAS 



SULC.LAT. 



As in the Pig's brain, the orbital sulcus is placed \< r\ 

 far forward ; it does not really join tin- rhinal fis-ure. hut 

 i- -eparated from it by a narrow strip of submerged cortex. 

 The apparent posterior prolongation of the orbital sulcus 

 inclines obliquely upward away from tin- rhinal fissure 

 (fig. 181), and finally -mU in llie position whore we should 



