OCR Text |
Show 1897.] ANATOMY OF A MANATEE. 53 conspicuously, exist to mark off the temporal lobe posteriorly. In M. latirostrls, on the other hand, the Sylvian fissure is plainly seen to be continuous with a V-shaped rhinal fissure separating off the pallium, the wedge-shaped tract of brain (very elephantine!), thus Brain of Manatus inunguis. The upper figure represents the dorsal aspect, the lower a lateral view. S, Sylvian fissure. exposed when the organ is viewed laterally, being itself divided by a continuation of the Sylvian fissure. O n the upper surface of the brain, moreover, there is, as indicated in Murie's figure, a short transverse furrow not present in M. Inunguis. |