1884.] 



MR. W. F. R. WELDON ON CALLITH R1X G1GOT. 



is a small postero-parietal fissure, and a superofrontal which is very 

 short. The occipital lobe exhibits traces of division into gyri. 



Fig. 4. 



Larynx of CallUhrix (jigot, 5 • jr. from the R. side, X 2. 



Fig. 6. 



Fig. 5. 



2>P 



an. 



CM 



Brain of Callithrix giyot, natural size. 

 Sy. Fissure of Sylvius; p.p., postero-parietal fissure; a.t, antero-temporal 

 fissure ; an., angular gyrus ; cm., calloso -marginal fissure ; cu., calcarine 

 fissure. 



On the inner surface the calloso-marginal and calcarine fissures are 

 simple and well developed. 



