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Show 50 MR. F. E. BEDDARD ON THE [Jan.19, the ileum. In my young spirit-preserved specimen there was a very narrow septum indeed between the wide mouths of the fingerlike appendages. Fig. 3. Caecum of Manatus inunguis. C, caecum; D, its two diverticula; /, fold of mesentery; gl, a coiled mesenteric lymphatic gland. The liver of Manatus latirostrls has been described without figures by Murie and with figures by Garrod. If I had not had the opportunity of seeing the actual liver myself I should have found certain well-marked differences between the two species which are really non-existent. The organ in fact varies in form to some extent. Garrod's figures agree more closely on the whole with the liver of M. Inunguis than with that of tbe individual of M. latirostrls which I have studied myself. Garrod figures the central lobe of the right half of the organ as being but little separated from its lateral lobe, than which it is m uch smaller. In my specimens, both of M. latirostrls and M. Inunguis, the separation was much more marked. The left lateral lobe of M. latirostrls, according to Garrod, is fairly notched on its lower border; it agrees, in fact, closely with M. Inunguis, but not with the M. latirostrls dissected by myself. On the under surface of the left lateral lobe in M. latirostrls I found a deep rounded cavity, which appeared to have lodged during life the glandular appendix of the stomach. This was so deep that it very nearly perforated the liver tissue. I observed nothing of the kind in M. inunguis. The gall-bladder as in M. latirosti-ls, is large; it was not so fully overlapped by a triangular piece of the right lobe as in M. latirostrls, as figured by Garrod and observed by myself. The kidneys of Manatus latirostrls have been described rather |