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Show 404 PROF. F. JEFFREY BELL ON THE [May 1, 12 mm. was taken between 40 and 50 fms. on Macclesfield Bank. I have had an enlarged figure drawn by Mr. Berjeau, as I hoped to be able to get some light on the morphology of the skeleton; but I must own myself very much disappointed. If I have correctly identified the plate I have marked C as the representative of the central plate of a typical calyx, it is clear that we have here an unsymmetrical central plate, for it has neither five sides nor ten, and the line of plates connecting it with the terminal (T) is so curved that it seems to be fanciful to compare it in any way with an arm of a Crinoid. In the intermediate plates there is neither order nor symmetry apparent to m e ; but as others may be better endowed with sagacity than myself, I give the figure in the hope that it may be of some service. PATIRIA BRIAREUS, sp. nov. (Plate XXV. figs. 1-3.) It is with the greatest hesitation that I refer to this genus the very curious specimens dredged between 30 and 46 fathoms off Macclesfield Bank, which have seven or eight arms, and which, therefore, if correctly assigned generically, are appropriately called briareus. It is very difficult to find specific characters. E = 6-3 r. Arms taper very gradually, with rather straight deep sides, and flat actinal surface ; adambulacral spinulation monacanthid, about five spines to each plate. The plates on the upper surface are very inconstant in shape, the papular pores among them are rarely anything but solitary. Madreporite obscure. Colour in spirit brownish, lighter when dry. B = 3 8 , r-6. Breadth of arm at base 6. Depth 5. E = 29, r = 6. Breadth of arm at base 5-5. Depth 4*5. This is, I a m aware, a very slight description; but, as I have already said, it is extremely difficult to find any specific characters ; what is most remarkable is that every one of the specimens exhibits restoration of the arms by budding. In one there are three complete and subequal arms and four papilliform growths together ; another has four subequal arms and four very much smaller, of the latter one is a good deal shorter than the rest; in a third there are three longer arms and four shorter arms, and in a fourth these latter (again four in number) are a good deal longer than in the preceding specimen-in both these cases the shorter arms were neighbours. In another example there is a group of four subequal arms which are hardly shorter than the other three ; in the last case the eighth arm is much shorter than any of the others. CH^ETASTER MOOREI, sp. nov. E = 6 r. Disc small; arms elongate, high and straight at the sides, tapering very gradually; they are made up of thirteen very regular rows of plates, some of which have rising from their centre a |