34 
Northcutt 
Figure 12. Transverse sections through rostral (A) and mid (B) diencephalic levels of the 
green iguana, Iguana iguana. Bar scale represents 1 mm. at, area triangularis; cp, cell 
plate of the pars ventralis of the lateral geniculate nucleus; dl, dorsolateral nucleus; dlh, 
dorsolateral hypothalamic nucleus; dm, dorsomedial nucleus; don, dorsal optic nucleus; dp, 
pars dorsalis of the lateral geniculate nucleus; e, nucleus entopeduncularis; fb, forebrain 
bundles; i.o.n., intercalated optic nucleus; Ifb, lateral forebrain bundle; Ih, lateral habenu- 
lar nucleus; mh, medial habenular nucleus; mfb, medial forebrain bundle; n, neuropil of the 
pars ventralis of the lateral geniculate nucleus; ot, optic tract; p, periventricular hypotha- 
lamic nucleus; pd, pars dorsalis of the lateral geniculate nucleus; m, retinal neuropil of ven- 
trolateral nucleus ; am, stria medullaris ; vl, ventrolateral nucleus ; vm, ventromedial nucleus. 
