The Fibre Tracts of the Fore brain of the American Diamond - Back Rattlesnake (Crotalus adamanteus)



  • 1The septa1 nuclei are larger than the corresponding cell groups in Varanus salvator or Chameleon vulgaris.
  • 2The corpus striatum consists of three cell groups, which are the paleostriatum, neostriatum, and the archistriatum.
  • 3The cortex of the forebrain has three divisions as in other reptiles, the lateral pyriform cortex, the dorsal parahippocampal cortex, and the hippocampal cortex.
  • 4The hippocampal and anterior commissures in Crotalus adam, nteus are similar to those of Varanus salvator.
  • 5The fornix is not as large or as heavily medullated as the one described in Varanus salvator by De Lange (1911).
  • 6A tractus cortico-archistriaticus was found, similar to the one noted by De Lange (1911) and Herman (1925) in Varanus salvator.
  • 7A tractus cortico-neostriaticus was noted in Crotalus adamanteus which was not, however, as large as in Varanus salvator.
  • 8The nuclei of the forebrainand the arrangement of the fibre tracts resemble those of the Lacertilia more closely than those of the Chelonia or the Hydrosauria.