. On the anatomy of vertebrates [electronic resource] . omologousconvolutions are indicated by colours, may still testify in part tothe extent to which the comparisons had been carried; the mainaim which I had in view being the determination of the homolo-gous and superadded convolutions in the more complex prosen-cephalon of In the Camivora, to the rhinal, figs. 90, 92,2, hippocampal, fig. 86, 4, callosal, ib. 7, and sylvian, fig. 90, 5,fissures, are added, in the smallest species(Putorius), the fissures 8 and 14, fig. first, commencing near the posterior partof the hemisphere, a
. On the anatomy of vertebrates [electronic resource] . omologousconvolutions are indicated by colours, may still testify in part tothe extent to which the comparisons had been carried; the mainaim which I had in view being the determination of the homolo-gous and superadded convolutions in the more complex prosen-cephalon of In the Camivora, to the rhinal, figs. 90, 92,2, hippocampal, fig. 86, 4, callosal, ib. 7, and sylvian, fig. 90, 5,fissures, are added, in the smallest species(Putorius), the fissures 8 and 14, fig. first, commencing near the posterior partof the hemisphere, at u9 extends forward,equally bisecting that part of the surfaceinner surface of hemisphere, between the interhemispheral and sylvian(5) fissures, then bends outward parallelwith and in front of the sylvian fissure. That marked u extends 1 The preliminary sketch of the history of this part of cerebral anatomy is from the13th Lecture of the Hunterian course for 1842. 2 xli. vol. i. p. 380. 3 xxv. (1844). 4 Medical Times, Nov. 12, 1842, vol. vii. p. PROSENCEPHALON OF MAMMALS. 117 from the interhemispheral fissure outward and slightly upper part of the hemisphere is thus here divided into tractswhich may be termed { medial /, m, sylvian e, e,0, and frontal n*. In a small Plantigrade, the Coati (Nasua), we find a longi-tudinal fissure, fig. 88, 11, n, which diverges outward as itadvances ; and a fissure, fig. 90, 8, which is in advance of andparallel with the sylvian, 5, but curves backward overarchingthat fissure and subdivides the cerebral tract between the fissure, 5,and the one marked n. Here, therefore, is a ground of choice, 87 88 89
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