248 C. JUDSON HERRICK 
clearly defined as in any of the Anura and its hypothalamic 
nucleus is apparently relatively larger and a more important 
component of the hypothalamus. 
The neurons of this nucleus (fig. 32) are of the same peculiar 
forms as those which border the infundibulum farther ventrally 
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Fig. 27 This section passes immediately dorsally of the anterior commissure 
ridge. The dorsal olfactory projection tract is a compact fascicle of very fine 
fibers in the midst of the less densely crowded fibers of the lateral forebrain 
bundle. As shown by the preceding figure, these fibers turn medialward to enter 
the deeper part of the ventrolateral nucleus, whereas the greater number of fibers 
of the lateral forebrain bundle continue forward laterally and dorsally of this - 
neuropil to reach the more rostral region of the ventrolateral part of the hemi- 
sphere. Fibers are converging medialward from the neuropil of the ventro- 
lateral nucleus to enter the decussation of the lateral forebrain bundles, most of 
these fibers being apparently collaterals of those of the forebrain bundle. 
