PLATE 42 
EXPLANATION OF FIGURES 
142 Diagram 0° a horizontal projection of the olfactory centers showing, in 
red, the components of the tractus olfacto-habenularis and their connections. 
x 12. 
com. hab., commissura habenularum, or commissura superior; fasc. relr., 
fasciculus retroflexus, Meynert’s bundle, tractus habenulo-peduncularis; ¢r. 
dien. hab., tractus diencephalo-habenularis (a portion of the tractus habenulo- 
diencephalicus of Goldstein) ; tr. entoped. hab., tractus entopedunculo-habenularis; 
tr. hab. dien., tractus habenulo-diencephalicus; tr. intermed. hab., pars. ant., 
tractus intermedio-habenularis, pars anterior; tr. intermed. hab., pars post., 
tractus intermedio-habenularis, pars posterior; (tr. olf. hab., tractus olfacto- 
habenularis (under this name are included all the fiber systems which ascend 
into the habenula of either side); tr. posthab. hab., tractus posthabenulo- 
habenularis; ir. preopt. hab., pars ant., tractus preoptico-habenularis, pars 
anterior; tr. preopt. hab., pars lat., tractus preoptico-habenularis, pars lateralis; 
tr. preopt. hab., pars med., tractus preoptico-habenularis, par medialis; tr. preopt. 
hab., pars post., tractus preoptico-habenularis, pars posterior; tr. ten., tractus 
teniae (the tractus olfacto-habenularis of Kappers, Goldstein, etc.). (For other 
abbreviations see explanation of fig. 136.) 
338 
