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Show 258 THE SECRETARY ON ADDITIONS TO THE MENAGERIE. [Feb. lo, Fig. 2. Otopoma turbinatum, n. sp., p. 255. 3, 3 a. Tropidophora socotrana, n. sp., p. 255. 3 b. Operculum of same. 4. Tropidophora balfouri, n. sp., p. 256. 5. Cyclotopsis omatus, n. sp„ p 257. 5 a. Operculum of ditto. 6, 6 a. Lithidion marmorosum, n. sp., p. 256. 6 b, 6 c. Apex of ditto, much enlarged. February 15, 1881. Prof. Flower, LL.D., F.R.S., President, in the Chair. The Secretary read the following report on the additions to the Society's Menagerie during the month of January 1881 :- The total number of registered additions to the Society's Menagerie during the month of January was 46, of which 30 were by presentation, 1 by birth, 12 by purchase, and 3 were received on deposit. The total number of departures during the same period, by death and removals, was 163. The most remarkable additions during the month of January were as follows:- 1. A White-nosed Saki {Pithecia albinasa), purchased January 11th, and apparently likely to do well. So far as I can make out, the typical example of this species in the Paris Museum has hitherto remained unique in Europe ; so that we are fortunate in obtaining an example of so rare a species. The animal, of which I exhibit a sketch by Mr. Smit (PI. XXIX.), is uniformly, but rather sparingly, covered with black hairs. The nose is broadly naked and of a bright fleshy red, but shows a few white hairs between the nostrils, which are sufficient to justify its scientific name. The long hairs on the head fall on both sides of the head and over the front. The length of the body is about 15 inches, of the tail 18 inches. The latter organ, although clothed with elongated hairs, appears to be slightly prehensile. The specimen is of the female sex, apparently not fully adult. The following references belong to this species :- PITHECIA ALBINASA. (Plate XXIX.) Pithecia albinasa, Is. Geoffrov Saint-Hilaire et Deville, Compt. Rend, xxvii. p. 498 (1848); Geoffroy St.-Hilaire, Arch, du Mus. t. v. p. 559; Gervais, Expe'd. de Castlenau, M a m m . p. 16, t. ii. fig. 2. Chiropotes albinasa, Gray, Cat. of Monkeys in B. M . p. 61 (1870). 2. An American Monkey of the genus Callithrix, probably referable to C. brunnea, Wagner (ex Natt. MS.), but not very easily determinable while alive. This specimen was purchased along with |