J ."('. PHYSIOLOGICAL SERIES. 



inclination forward and inward. The intercalary sulcus 

 (the cephalic extension of the calcarine the " splenial " of 

 Krtieg) extends almost to the cephalic pole of the hemi- 

 sphere. There is a short genual sulcus. 0. C. 13:.'. 

 Krueg, Zeitsch. f. wiss. Zool., Bd. xxxiii. 1880, p. 628. 



D. 309. The brain of a Palm-Civet (Paradoxurus typus). 



An ansate sulcus is present in this specimen, and in 

 front of it there is a definite furrow which may represent 

 the crucial sulcus. 0. ('. 132."i Oif, 



D. 310. The brain of Hemigale liardwickii. 



This brain resembles that of Paradoxurus. Note, however, 

 the upturning of the anterior end of the intercalary (or 

 splenial) sulcus, which may represent the otherwise 

 missing crucial sulcus. (This, however, hardly accords 

 with the suggestion made concerning the representative of 

 the crucial sulcus in Paradoxurus.) 0. C. 1325 n o. 



D. 311. The brain of a Binturong (Arctictis bintwong). 



In most respects- this brain resembles those of Para- 

 doxurus and Hemigale. 



There appear, however, to be two " Sylvian-like " sulci 

 opening into the angle of the rhinal fissure. They may be 

 regarded as the two " terminal sulci " of Holl, the posterior 

 of which is concurrent with the posterior ectosylvian sulcus. 

 In many Carnivores there is a small submerge* 1 area in the 

 Sylvian fissure called the "trigonum Sylvii " by Holl. 

 The bounding fissures of this trigone he calls tho terminal 

 sulci : in this specimen they are exposed on the surface BO 

 that there is no true " feline Sylvian fissure/' 



On the right hemisphere there is a faintly-marked 

 crucial sulcus quite independent of the forward prolongation 

 of the so-called " splenial " sulcus. It is more indistinct 

 on the left side. There is a broad gyrus between the 

 corono-lateral sulcus and the mesial plane, indented ly 

 numerous short sulci on the right hemisphere and by pit- 

 like short sulci on the left side. The unsate is represented 

 by a peculiar arc-like sulcus quite independent of the 

 lateral. 0. C. 1325 I 



Mivart, Journ. Linn. Soc., vol. xix. 1886, p. 7. 



