Endbrain ( EB ; Kuhlenbeck, 1927 ) : The rostral (Schulze, 1893) and dorsal (Barclay, 1803) topographic division of the forebrain (Goette, 1873); the caudal (Cleland, 1879) and ventral (Schulze, 1893) division is the interbrain (Baer, 1837). This basic division of the macrodissected adult human brain (Edwin Smith Surgical Papyrus, c1700 BC) has been recognized at least since Mondino (1316), see translation by Singer (1925, vol. 1, p. 92), and was named thus by Kuhlenbeck (1927, chs. 3, 10). This English form of telencephalon (Kuhlenbeck, 1927) has been used routinely, for example by Herrick (1915, p. 121), Clark (1951, p. 854), Williams & Warwick (1980, p. 982), and Nauta & Fiertag (1986, p. 39). Synonyms include secondary forebrain (Sharpey et al., 1867), telencephalon (Kuhlenbeck, 1927), cerebrum (Obersteiner & Hill, 1900), cerebral hemispheres (Tiedemann, 1826).

Hypothalamus ( HY ; Kuhlenbeck, 1927 ) : The ventral (Schulze, 1893) topographic division of the interbrain (Baer, 1837): the dorsal (Barclay, 1803) topographic division is the thalamus (His, 1893a). The first adequate description of the hypothalamus as a layer of gray matter surrounding the lower half of the third ventricle (Galen, c173) was provided by Wharton (1656, see 1966 translation, p. 170); His (1893a, pp. 159-162) introduced the term but assigned the preoptic region (Swanson, 1976b, pp. 229-235) of the hypothalamus (Kuhlenbeck, 1927) to the telencephalon (His, 1893b). The definition here was introduced for vertebrates by Kuhlenbeck (1927, p. 67, Ch. 9); also see Christ (1969, p. 23), Nauta & Haymaker (1969, Tab. 4-1).

Telencephalon ( Kuhlenbeck, 1927 ) : Original Latin form of vertebrate endbrain (Kuhlenbeck, 1927); chs. 3, 10.

Telencephalon impar ( Kuhlenbeck, 1929 ) : Synonym for telencephalon medium (Herrick, 1910); p. 24, also see Crosby et al. (1962, p. 343).