422 On a new Species of Hare from Algeria, The spicula consist of four forms : — {(i) Shaped like a pair of opera-glasses, or like two globose bottles or carafes united at their sides and having two necks. The sides bear large tubercles and the mouths of the necks are set with small conical tubercles. {h) A cylindrical staff with two whorls, each of four thick rays ; the projecting ends of the staff make up a ten-rayed spicule. The ends of the rays ai-e tuberculated. Contracted and irregularly-formed spicules of this type frequently occur. (c) A few cruciform spicules of various shapes, but essen-tially composed of four arras at right angles, meeting at the centre with equal acute-angled bases. [d] Monaxile spicules, cyHndrical, fusifoim, or clavate, all more or less tuberculated. These belong to the polype-cells. LII. — Description of a new Species of Hare from Algeria. By G. E. H. Barrett-Hamilton. The following is a description of a new hare which was obtained by Dr. F. D. Drewitt at Col. de Sta, in the Aures Mountains, near Biskra, in Algeria, in March 1896. In its size and form and in the ))eculiar narrowness of its skull this hare is very similar to Lepus knhylicus, de Wint., but it is remarkably different in its conspicuously lighter coloration ; it appears to be a desert form of Lepus kuhglicus, in which all the rich cinnamon tints of that species are replaced by pale grey or yellowish buff. Lepus pallidiorj sp. n. In size, form, and skull similar to L. kahi/Iicus, but with the coloration conspicuously lighter on all parts of the body. The colour of the undeifur* in L. kahylicus is rich cinnamon, but in L, pallidior pale grey or yellowish buff. The white of the belly of L. pallidior is clearer, the cinnamon of the flanks almost replaced by pale buff, the chin white, the cheeks light grey instead of rufous, the nuchal patch and the fringes of the ears a much lighter buff, and on the back the cinnamon annulations of the hairs of Lepus kahylicus are replaced by annulations of a silvery-grey colour. The size of the black tips of the dorsal hairs is very much reduced, so that the back * Except the bases of the hairs in both species, -which are bluish.
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