248 PHYSIOLOGICAL SERIES. 



complex, when it is seen that the calcarinc sulcus is really 



distinct from the intercalary in this Carnivore, as it i> in 



the Edentata and Primates (fig. 121). 0. C. 1325 A. 



Krueg, Zeitsch. f. wiss. Zool., Bd. xxxiii. 1880, p. 617. 



D. 295. The brain of a Tiger (Felts tigris). 



In a comparison of the brain of the Tiger with that of 

 the Cat, we observe a series of changes analogous to those 

 which are found in the Lion's brain when contrasted with 

 the latter. The arrangement of the Sylvian region re- 

 sembles that described as typical of the Lion (D. 292). 



0. C. 1324. Hunter'ian. 



D. 296. A cast of the cranial cavity of a Tiger (Felis tigris). 



This shows the true proportions of the large flattened 

 olfactory bulbs which are placed well in front of the 

 hemispheres. 



D. 297. The brain of a Jaguar (Felis onca). 



Note the continuity of the anterior ectosylvian and tin- 

 long diagonal sulcus ; also the apparent connection of the 

 former with the upper part of the pseudosylvian sulcus, as 

 in the Lion's brain (fig. 118): and the numerous secondary 

 sulci springing from the convexity of the suprasylvian arc. 



0. C. 1325 B. 



D. 298. The brain of a Leopard (Felis pardus). 



Note that the upturned cephalic extremity of the inter- 

 calary sulcus (the non-calcarine part of Krueg's splenial 

 sulcus) crosses the dorso-mesial edge of the hemisphere so 

 a- to nmulate the crucial sulcus. The true crucial sulcus 

 is placed further forward and is completely separated from 

 the intercalary sulcus, as is usual in the Felidro. 



Note the well-developed marginal sulcus of Owen (the 

 conjoint supra- and post-splenial of many writers). 



The anterior ectosylvian sulcus is continuous with the 

 diagonal, and on the left hemisphere joins the posterior 

 ectosylvian to form a complete ectosylvian are a- in the 

 Cynoidea. 0.0. V.\->:> B* 



Krueg, Zeitsch. f. wiss. Zool., lid. \\xiii. l.ssn, p. 017. 



