CHAP. Ill] THE MAMMALIAN ORDER PRIMATES 



51 



CENTRAL SULCUS 



ARCUATE SULCUS — 



SULCUS RECTUS / ■>=, 



OR8ITAL SULCUS 



FISSURE OF SYLVIUS 



INTRAPARIETAL SULCUS 



SULCUS LUNATUS 



- SULCUS 



TEMPORALIS 



SUPERIOR 



COMPENSATORY SULCUS 



PARIETO-OCCIPITAL 



FOSSA 



CALOARINE SULCUS -' 



COLLATERAL SULCUS 



- SULCUS 

 GENUALIS 



INCISURA TEMPORALIS OR 

 RHINAL FISSURE 



IPPOCAMPAL FISSURE 



Fig. 24. The left cerebral hemisphere of a Nasalis monkey (Cercopithecidae) : 

 the lateral and mesial aspects are shewn. (Hose Donation n. Mus. Anat. Cant.) 



4—2 



