404 PROP. F. JBrFRBT BELL OIN" 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 unsym metrical 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 inter- 

 mediate plates there is neither order nor symmetry apparent to me ; 

 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 difficidt 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 sm'face are 

 very inconstant in shape, the papular pores among them are rarely 

 anything but solitary. Madreporite obscure. Colour in spirit 

 brownish, lighter when dry. 



E=38, 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 am 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.5ETASTER MOOEEI, 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 regu- 

 lar rows of plates, some of which have rising from their centre a 



