| OCR Text |
Show 602 MR. F. E. BEDDARD ON THE [Dec. 6, Dasyprocta azarce.-Total length 46 mm., breadth 30 mm., height 20 m m. The cerebral hemispheres are very closely applied along nearly their whole length ; the divergence posteriorly only permits a portion of the anterior pair of corpora quadrigemina to be seen when the brain is viewed from above. Each hemisphere measures 30 m m . in length and is furrowed. The general contour of the hemispheres does not differ from that of the last animal. The principal furrow (fig. 3) runs longitudinally at a distance Fig. 3. Brain of Basi/procta azarce. A, from above ; B, from the side: d, anterior transversely running furrow ; S, Sylvian fissure ; a, b, c, longitudinal fissures. See p. 607. of about 5 mm. from the interhemispheral sulcus. It commences close to the posterior margin of the brain and passes nearly as far as the anterior end; at the end of the first third of the total length of the hemisphere this furrow gives off a branch which runs forwards and outwards, joining the rhinal furrow below ; 8 m m . behind this point (on the left half of the brain), or 11 m m. |
