OCR Text |
Show 1901.] ON THE BROAD-NOSED LEMUR. 121 the trachea upon the arch, occasioned by the position of the heart, which lies with its longitudinal axis much more nearly at right angles to the long axis of the body than in most mammals. The Alimentary Caned has been already fully described, but in examining this system one is much struck by the great resemblance the different parts bear to the corresponding organs of Dasypus. This perhaps is specially the case with the liver, which is almost an exact counterpart on a small scale of that of Dasypus villosus. The liver of Tatusia, on the other hand, differs materially from those of Dasypus and Chlamydophorus; it is much rounder and more compact in form ; the left lateral lobe shows no great preponderance in size over the rest, and the caudate lobe is very much smaller. I have nothing to add to previous descriptions of the respiratory or generative organs. 5. Notes on the Broad-nosed Lemur, Hapalemur simus. By FRANK E. BEDDARD, M.AV F.R.S. [Received January 31, 1901.] (Text-figures 21-25.) Some years since1 I was enabled to add to the existing knowledge of Hapalemur griseus by the examination of two specimens that had died in the Society's Gardens. I am now able to compare the facts which I then ascertained with the structure of the only other species of the genus-H. simus. The individual which I have dissected was an example deposited in the Society's Gardens by the Hon. Walter Rothschild, M.P., F.Z.S., last year. After living for some months it died of a diseased condition of certain of the lymphatic glands of the abdominal cavity. The spleen also was invaded by pus, but iu other respects the carcase showed no pathological conditions. The animal was a female. Our preseut knowledge of the anatomy of this Lemur is due to Gray, Jentink, and Milne-Edwards. The species was founded by Gray2, w h o described as well as figured the entire animal; besides external characters, Dr. Gray dealt with and figured the skull and the dentition. So far as they go, the facts set down by Gray do not appear to m e to be in want of correction. Later Dr. Jentink again figured 3 the skull of H. simus, comparing it with that of H. griseus by means of other figures. These drawings also seem to me to represent the distinctions between the skulls of the two species accurately. Finally, the late Prof. A. Milne-Edwards in the last issued volume of his and Grrandidier's ' Histoire naturelle de Madagascar,' has figured not only the skulls of the two species, i P. Z. S. 1884, p. 391, and ibid. 189J, p. 449. 2 " Notes on Hapalemur simus, &c," P. Z. S. 1872, p. 829. 3 "On some rare and interesting Mammals," Notes Leyd. Mus. vii. 1885, p. 33. |