376 



PHYSIOLOGICAL SERIES. 



only the Sylvian fissure and the ealearine group of furrows. 

 This fact indicates the increased morphological stability of 

 the Sylviun and calcarine sulci in the Family Lemuridae. 



0. C. 1337 A/ 



D. 544. A cast of the cranial cavity of an extinct sub-fossil 

 Lemuroid ( Globilemur flacourti). 



The brain of this extinct Lemurid is much larger and its 

 hemispheres very much richer in sulci than that of any 

 Lemur. 



Fig. 216. (x.) 



OLF. BULB. 



; SULC.RECT. 

 ^SULC.CENT.? 



SULC. INT. 

 - SYL.F. ? 



SULC. PAR. 





Fig. 217. (x|.) 



SULC. INT 



SULC CENT. ? 



FLOC. 



SULC. ORB. 



SULC.SYL.? 



Its "form approaches most to that of the smallest 

 members of the Family (Lemuridse), viz. Microcelms, both 

 being broad in their po-terinr moirly and suddenly at- 

 tenuated anteriorly. ... In the arrangement of its con- 

 volutions the to->il departs from tin- Lnniirid and approaches 

 the ( vbidaj and the Cercopithecidse/' 



