ON THE BRAIN OF ATELES PANISCUS 
EXPLANATION OF PLATE XNIX. [PLATE 36]. 
(All the figures are of the natural size.) 
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Fig. 1. Brain of Aéeles panzscus (female), almost fresh, viewed from above. 
Fig. 2. Brain of a male Aée/es, preserved in spirit and altered in form. 
Fig. 3. Under view of the female brain. The cerebellum has fallen back by its own 
weight beyond the posterior edges of the cerebral hemispheres. _/. flocculus. 
Fig. 4. Side view of fig. I. 
Fig. 5. The same brain dissected, to show the lateral ventricles and their cornua. c¢ a, 
anterior ; ¢ @, descending ; ¢ f, posterior cornu; *hippocampus minor. On 
the right side, the distance between the extremities of the diverging lines 
indicates the whole length of the cornu on one side, in the female brain. 
Fig. 6. The cerebellum viewed from above ; v s, vermis superior. 
Fig. 7. The cerebellum viewed from below ; v 7, vermis inferior. 
NOMENCLATURE AND LETTERING OF ALL THE FIGURES. 
Cerebrum : 
Lobes : frontal lobe, 77; parietal, Pa; median, A7; temporal, Ze; occipital, Occ. 
Gyri (of 
Gyri (of 
the outer face) : 
1. Infero-frontal (étage surcilier). 
2. Medio-frontal (étage frontal moyen). 
3. Supero-frontal (étage frontal supérieur). 
1’. Supra-orbital (plis orbitaires). 
4. Antero-parietal (premier pli ascendant). 
5. Postero-parietal (deuxiéme pli ascendant). 
5’. Postero-parietal lobule (lobule du deuxiéme pli ascendant). 
6. Angular (pli courbe). 
7. Antero-temporal (pli temporal supérieur). 
8. Medio-temporal (pli temporal moyen). 
g. Postero-temporal (pli temporal inférieur). 
10, Super-occipital (pli occipital supérieur). 
11. Medio-occipital (pli occipital moyen). 
12, Infero-occipital (pli occipital inférieur). 
13. First external annectent 
14. Second external annectent 
15. Third external annectent 
16. Fourth external annectent 
(plis de passage externes). 
the inner face ) : 
17. Marginal (pli de la zone externe). 
18. Callosal (circonvolution de Vourlet, Foville) (pli du corps calleux). 
18’. Quadrate lobule (lobule quadrilatcre, Foville). 
19. Uncinate (circonvolution 4 crochet, V. d’Azyr) (lobule de Phippocampe). 
20. Dentate (corps godronné). 
21—24. Internal annectent (plis de passage internes). 
25. Internal occipital lobule (lobule occipital). 
