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Show 636 MR. W. A. FORBES ON THE UAKARI MONKEYS. [NbV. 30, by the left lateral lobe at its antero-internal angle. The vena cava inferior is almost entirely bridged over by hepatic tissue between the Spigelian and caudate lobes. The development or otherwise of this bridge, however, is an unimportant feature in the liver of the Primates, and is largely an individual structure. • O n the whole, this liver of Brachyurus rubicundus more resembles that of Callithrix amicta in its structure and proportions than that Fig. 3. Liver of Eed Uakari, from above. About natural size: of any other species I a m acquainted with, though I have not seen that of Pithecia monachus1, which, judging from Prof. Flower's description2, must much resemble that oi Brachyurus. In two specimens I have by m e of the liver of P. satanas, the caudate lobe is triangular and forked instead of square, and the left lateral lobe is proportionally smaller than in Brachyurus; this develops moreover P.S. Jan. 27, 1881.-The recent death of a specimen of this species allows me to confirm the resemblance of its liver to that of Brachyurus. 2 P. Z. S. 1832, p. 332, and Med. Times.. &c, s. c. p. 508. |