NERVOUS SYSTEM. VERTEBRATA. 



385 



Family CEBID^E. 



D.554. The brain of a Squirrel-Monkey (Chrysothrix sciurea), 

 (<?); in which the left hemisphere has been separated 

 (figs. 224, 225, 226). 



Fig. 224. (Nat. size.) 



SULC. RECT, 



SULC. CENT. ? 



SULC.T8.0CC. 



- SYL. F. 



Fig. 225. (Nat. size.) 



SULC. IN r SYLF. 



SULC. RECT 



SULC. PAR. 



Fig. 226. (Nat. size.) 



SULC. INTRAPAR 

 SULC. PAR. DC C. 



SULC.P.CAL 



SULC..INTERCAL. 



OPT. CHI. 



SULC. CAL. SULC. COLL 



In this brain perhaps the most striking feature is the 

 very pronounced manner in which the caudal extension 

 VOL. n. 2 C 



