IN THE EXTINCT LEMUES OF MADAGASCAR, 



169 



Text-fig. 55. 



s front, orbit.-- 



s. front, inf. 



Text-fig. 56 



Text-fig. 57 



s-luncvt 



f. Lujxat/, 



cereAeUicm'. 



Text-fig. 55. — Diagram of the dorsal aspect of the brain of MesojrrojjitJiecus 'pHJiecoides. Natural size. 

 Text-fig. 56.— The dorsal aspect of the left cerebral hemisphere of an Inclris hrevicaudatus. Natural size. 

 Text-fig. 57. — The dorsal aspect of the right cerebral hemisphere of a Projnthecus coquereli. Natural size. 

 Text-fig. 58. — Diagram to represent a restoration of the dorsal aspect of the brain of Nesopitliecvs. 



