Fig. 443.—Ateles ater, black-faced coaita. Ileo-colic junction and cæcum; dried preparation. (Columbia University Museum, No. 240.)
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Fig. 444.—Ateles ater, black-faced coaita. Ileo-colic junction and cæcum, with ileo-cæcal
folds. (Columbia University Museum, No. 720.)
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Fig. 445.—Ateles ater, black-faced coaita. Ileo-colic junction and cæcum, with ileo-cæcal
folds. (Drawn from preparation.) (Columbia University Museum, No. 300.)
1. Ventral vascular ileo-cæcal fold.
2. Intermediate non-vascular ileo-cæcal fold.
3. Dorsal vascular ileo-cæcal fold.
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Fig. 446.—Nyctipithecus commersonii,
Vitœ monkey. Ileo-colic junction and
cæcum; dried preparation. (Columbia
University Museum, No. 238.)
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Fig. 447.—Chrysothrix sciureus, Viti monkey.
Ileo-colic junction and cæcum.
(Columbia University Museum, No. 1624.)
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Fig. 448.—Mycetes cavaya, black howler. Ileo-colic junction
and cæcum. (Columbia University Museum, No. 1136.)
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Fig. 449.—Mycetes fuscus, brown howler. Ileo-colic junction and cæcum,
with ileo-cæcal folds; ventral view. (Columbia University Museum, No. 674.)
1. Ventral vascular ileo-cæcal fold.
3. Intermediate non-vascular ileo-cæcal fold.
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Fig. 450.—Drawn from the same preparation as Fig. 449; dorsal view.
2. Dorsal vascular ileo-cæcal fold.
3. Intermediate non-vascular ileo-cæcal fold.
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2. Lagothrix.—The cæcum is very capacious and long, bent at a sharp angle upwards and to the left toward the ileo-colic junction.
Type: Lagothrix humboldtii (Fig. 451).
Fig. 451.—Lagothrix humboldtii, Humboldt’s lagothrix. Ileo-colic junction and cæcum. (Columbia University Museum, No. 1511.)
3. Pithecia.—The cæcum resembles in general the type presented by Ateles, but is less curved and less reduced and pointed at the termination.