400 



PHYSIOLOGICAL SERIES. 



comparison with that of the large Old World Apes and 

 Man, it is at the same time sufficiently simple to be 

 compared with all the New World Apes, and even with 

 the Lemurs. 



The olfactory bulb and its long attenuated peduncle are 

 well shown in this specimen. The diminutive proportions 

 of these bodies, and also of the pyrifonn lobe, are common 

 to all the Anthropoidea. 



Fig. 236. 



SULC PAR. OCC. 

 I 



SYL.F. 



..PARALLELS. 



SULC. INF. OCC. 



SULC.INTRAPAR. 



SULC. SIM. 



SULC. ARC. 



Fig. 237. (X $.) 



SULC. CENT. SULC. 1NTRAPAR, 



\ ' 



SULC. RECT 



-SULC. INF OCC. 



OLF.BULB. 



The deep long oblique Sylvian fissure begins on the base 

 of the hemisphere in a deep valleeula Sylvii. It :i|)]><>;irs 

 to end above by joining the parallel sulcus'(fig. 2,'} 7), but 

 they are in reality separated by a submerged gvrus, beyond 

 which the latter is prolonged for some distance (fig. 2'M) 

 into the angle of the intraparietal sulcus. 



The. neopallium becomo folded in a most complicated 

 manner in the neighbourhood of the caudal part of the 

 intraparietal sulcus (fig. 230). 



The intraparietal sulcns has the form of an inverted 

 V, the anterior limb of which is about twice as long as the 

 posterior. The sulcus is exceedingly f deep in the great er 



