THE ANNALS AND MAGAZINE OF NATURAL HISTORY, [FOURTH SERIES.] No. 81. SEPTEMBER 1874. XXIV. — On some new Oenera and Species of Araneidea. By the Rev. O. P. Cambridge, M.A., C.M.Z.S. [Plate XVII.] The spiders described here belong to widely separated locali-ties : five are from Australia, one from Natal, and one from Brazil. All are of great interest, especially the new genus Mutusca (from Australia) ; the abnormal position of the in-ferior spinners in this spider is almost unique, occurring only, as far as is known (but in a still more striking way), in one other species, Liphistius desultor ?, Schiodte. In Attus volans, sp. n., from near Sydney, New South Wales, the wing-like development of the superior epidermis of the abdomen is also, as far as I am aware, hitherto quite unexampled. Details of these and the remaining species, with all known particulars concerning them, will be found in the descriptions given below. One other circumstance connected with two of the spiders recorded here is perhaps worth noting in this short introduc-tion ; and tliat is the occurrence in North Australia of two remarkable genera, Miagrammo2)es (Cambr.) and Amycle (Cambr.), first discovered not long since in Ceylon. The species representing these genera in Australia are exceedingly closely allied to those found in Ceylon ; in fact (as below re-marked) it seems doubtful wliether one of them, Amycle albo-maculata^ may not eventually prove to be a mere variety of the only as yet known Ceylon species. How does this affect the tlieory of the entire separation of the faunas of Ann. & Mag. N. Hist. Scr. 4. Vol. xiv. 12