Wilder, Nejiral Tenns. 323 



their list. As I have shown ('84, a, 373, and '89, a, 143), at 

 a certain fetal stage the occipital fissure has a distinct ental cor- 

 relative and is hence entitled to be ranked as a total fissure, or, 

 according to the distinction proposed by the German com- 

 mittee, as a fissure rather than a sulcus. But in the adult the 

 general thickening of the walls commonly obliterates the orig- 

 inal elevation, and the "totality" of the fissure is not apparent. 

 This temporary existence of the essential character should per- 

 haps constitute a fourth objection to the distinction between 

 fissnra and sulcus proposed by the German committee and dis- 

 cussed in §§121-122. 



II, B, 37, bidiisimn. — This seems to have been omitted 

 from the German list. Its condition in man, chimpanzee, 

 monkey, cat and sheep has been discussed by Fish ('93, a). 



II, C, I, Cortex. — I am unable to see any good reason for 

 replacing this familiar and suggestive mononym by the ponder- 

 ous dionym, substantia cofticalis. 



II, C, 14, Tapetiim. — The original Latin is tapete, perhaps 

 from the Greek Tdnrji. The ending £- occurs with so few anatomic 

 terms, e. g. , rctc, that it is perhaps scarcely worth while to dis- 

 turb the established modern usage. 



II, C, 21-23. — Why should these names of divisions in- 

 clude the genitive of the major part any more than with 10-14, 

 or 26-29 ? 



III, 8, 9, Postgcniculuvi and Pi'aegeniculum. — These loca- 

 tive names retain the essential features of the earlier polyonyms. 

 The parts are strictly caudad and cephalad of one another. The 

 more lateral aspect of the praegeniculum is due to a difference 

 in size. 



Ill, B, 4, Foramen interventricidare . — This cavity, the aula 

 (§211) and two portas of my list (II, B, 2, 3), connects the 

 right and left "lateral ventricles." These are cavities of the 

 "telencephalon" (my prosencephalon), not of the diencephalon. 



Ill, B, 9, Praeconimissura. — This is certainly prosenceph- 

 alic (" telencephalic "), and to include it among diencephalic 

 parts is as artificial as in the case of the * * foramen interventric- 

 ulare " (III, B, 4). 



