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Show 290 MR. A. H. GARROD ON THE MUSK-DEER. [Mar. 20, variable nature of this small hepatic appendage, even in the same species. , , With reference to the generative organs, Pallas records the existence of Cowper's glands and a filiform termination to the urethra, of some length. I take the opportunity of figuring the glans penis, as the drawings given by Pallas, although particularly instructive, are too small to exhibit some of its characteristics (fig. 3). The glans, Fig. 3. Glans penis of Moschus. on the whole, is more like that in the genera Gazella and Addax* in Ovis, Capra, Cephalophus, and Camelopardalis, in all of which there is a filiform termination to the urethra. The Cowper's glands were about the size and shape of haricot beans, one on each side. The vesciculeg seminales were each an inch long, and of a fairly uniform breadth of | inch. The urethral ends of the vasa deferentia were considerably dilated for a little more than an inch and a half. As has been clearly described by Pallas, the musk-sac opens a short distance in front of the preputial opening; its size is nearly that of an ordinary orange. In the specimen under consideration it was filled with a dark-brown, chocolate-coloured powder, possessing, most powerfully, the characteristic odour. Its minute orifice was a little more than half an inch in front of the opening of the prepuce, from which latter a few stiff hairs, about half an inch long, projected forwards and downwards. The two orifices were included within a common sphincter muscle, the skin over which was covered with fine hairs, all radiating towards its centre. The slightly convex cutaneous surface included within the sphincter was devoid of hair. This account agrees with that of J. F. Brandt and J. C. T. Ratzeburg in 18392; and m y specimen in no way differs from the excellent figures of the musk-sac given by those authors. In m y paper on the visceral organs of the Ruminantia3,1 have drawn special attention to the nature of the internal surface of the uterus in the Order, having given strong reasons for the surmise that the Cavicornia are characterized by having numerous cotyledons on the placenta, on which account they are termed Polycotyledonto-phora, whilst in the Cervidae (therefore termed Oligocotyledonto-phora) the cotyledons are very few in number. It occurred to m e that the nature of the interior of the uterus or the placenta would throw much light on the very disputed point as to the affinities of Moschus. Of the placenta Pallas tells us 4 that " cotyledones et respondentes placentulee oblonga, plana figura gaudent et in series fere digeruntur. 1 Vide antea, p. 10, fig. 18. 2 Medicinische Zoologie (Berlin, 1839), Band i. pp. 41-51, pl. 8. 8 P. Z. S. antea, p. 12. * Loc. cit. p. 41. |