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Show 384 . MR. CECIL WARBURTON ON A [Apr. 3, scaly cuticle. It is also noteworthy that not even the winter-coat of a horse in Scandinavia approaches in denseness that of the supposed Onohippidium; while there are other differences more easily seen than described. Taking all circumstances into consideration, I think we must return to the above suggested theory, that the specimen now under discussion is a piece of skin of an Onchippidium. If that be correct, it is of course very interesting to have a fragment of the soft parts of a second animal, long ago extinct, from the Cueva Eberhardt. The detailed statements of Erland Nordenskjold as to the extreme dryness of those parts of the cave where these remains were found, and the protecting layer of sulphate of magnesia, give a plausible explanation of the organic substances (even flesh on some bones) having been so excellently preserved for such a considerable time. I may add that Professor Lagerheim has also made attempts to find bacteria in the faecal material, but failed to discover any 1. 3. O n a remarkable Attid Spider from Borneo, Mantisatta trucidans, n. g. et sp. By C E C I L W A R B U R T O N , M.A., Christ's College, Cambridge. [Received March 31, 1900.] By the courtesy of Dr. Sharp I am able to describe a very interesting new Spider found in a collection of insects, chiefly Termites, made by Dr. G. D. Haviland in Sarawak, Borneo. The Spider was overlooked ou first going over the collection, and unfortunately no note was made of the particular insects with which it was associated, and nothing is certainly known with regard to its habits. Fam. AITIDJ;, Subfam. LYSSOMAN^E. Genus MANTISATTA, n.gen. Body elongated and depressed. Eyes arranged as in Lyssomanes, Spinnerets beneath the posterior end of the abdomen," which is produced beyond them into a caudal process. Legs of the first pair much the most strongly developed, with strong forwardly directed spines under the tibia and backwardly directed spine's i After the reading of this paper, Dr. W. G. Ridewood remarked that he had examined the m.croscopic structure of the hair of the two equine hoofs found in association with Grypotherium by the La Plata Museum expedition H e had observed in the hairs attached to these hoofs the taperin- of the hair at each end, the smly cuticle, and the excentric position of the relatively lanse medulla which had been described as characterizing the hair of the pro-blematical skin found by E. Nordenskjold. v |