1873.] 



ANATOMY OF THE BINTURONG. 



201 



and g inch across at its broadest part, near its base. The two lateral 

 aggregated collections of these glands make up the oval or nearly 

 circular mass in front of the testes ; and the raphe of the perineum 

 runs at the bottom of the cleft between them. The penis, in its non- 

 erect condition, does not project more than | inch beyond them. 



The prostate is present, but only forms a small glandular mass 

 round the sides and inferior portion of the urethra. It is situated 

 3 2 inches from the base of the bladder, being simple, | inch broad, 

 and g inch long. Cotvper's glands are situated 1| inch in front of 

 it ; they are oval, and each is ^ inch broad and | inch lono-. The 

 testes measure Iginch by -^ inch. There is no os penis'. The 

 glans penis is conical and pointed, | inch long, and presents round 

 its base several small dark brown hard flattened papillse, about 

 i^ mch long. 



The vesiculse seminales are absent. 



The anal glands are simple, globose, and thin-walled, about 2 

 in diameter ; their orifices, one on each side, are extremely small. 



The brain presents the feline characters so clearly pointed out by- 

 Prof. Flower* ; and, as in Felis, it differs from that of Viverra in 

 having the posterior and not the anterior of the limbs of the internal 

 circumsylvian gyrus of greater breadth. 



Fig. 4. 



| inch 



Brain of the Binturong. 



The Sylvian fissure tends to be vertical, but is directed somewhat 

 backwards as well as upwards. It is surrounded by three gyri. 

 The inner commences behind, near the lower border of the temporal 

 lobe, and, after ascending as high as the top of the fissure, bends 

 round it and descends on the frontal lobe to the supraorbital fissure, 

 when it again doubles forwards to form the commencement of the' 

 middle gyrus. Its posterior limb is twice the breadth of the an- 

 terior, and is bisected by a vertical fissure which extends down as 

 far as the horizontal temporal fissure. The middle gyrus is of uni- 

 form breadth throughout, and, commencing at the folding of the 

 inner gyrus on the frontal lobe, goes round it and terminates at the 

 lower border of the temporal lobe behind ; there is no fold in it at 

 its posterior superior angle. The third or outer gyrus is but slightly 

 bent in its anterior limb, which commences at the supraorbital 

 * Proc. Zool. Soe. 1869, p. 478. 



