268 PHYSIOLOGICAL SERIES. 



D. 342. Tiie brain of a Mexican Coati (Nasua narica). 



No precrucial sulci are present ; the postlateral sulci are 

 less well-developed. 0. C. 1325 Q. 



D. 343. The brain of a Raccoon Fox (Bassariscus astutus), in 

 which the left hemisphere has been separated from the rest 

 of the brain. 



This is a smaller and correspondingly simplified copy of 

 the brain of the Raccoon. The mesial prolongation of the 

 crucial sulcus is overlapped but not joined by the cephalic 

 prolongation of the calcarine. There are regular supra- 

 sylvian and corono-lateral arcs. There is a simple ansate 

 and a triradiate compensatory ansate. There is a short 

 vertical postlateral sulcus. In the left hemisphere the 

 anterior lip of the pseudo-sylvian and the upper lip of the 

 anterior rhinal fissures have been dissected away to show the 

 submerged Sylvian trigone continued forward into the 

 " orbital gyrus." There is no trace of an ectosylvian sulcus. 

 Beddard, Proc. Zool. Soc. 1898, p. 129. 



D. 344. The brain of a Bassaricyon alleni. 



This closely resembles the brain of Bassariscus. The 

 crucial sulcus is, however, longer and placed slightly further 

 back in the hemisphere ; it also has a distinct notch-like 

 precrucial sulcus, so that the " Ursine lozenge " can be 

 distinctly recognised. 



Beddard, Proc. Zool. Soc. 1900, p. 668, figs. 5 A & B. 



D. 345. The brain of a Panda (Ailurm fulgens), (c?) 



In most respects this brain (fig. 142) resembles those 

 of Procyon and Nasua. 



Fig. 142. (xf.) 



SULC. LAT. 



SULC. SURRAS. 

 SULC. ANS. 



SULC. CRU. 



SULC. ORB. 



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s 



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A >ul'-u- ulii<-li jn-olialily icpic-fiit- the poster 



Mllcll.-. 



rior 



