398 PROF. F. JEFFREY BELL OX THE ' [May 1, 



But the whole creature is much stouter altogether, with longer, 

 stronger cirri, wider arms, much stronger pinnules, and a granular 

 covering to the joints. It has a spread ot 240 mm., and the cirri 

 are about 12 mui. long. The arrangement and number of the 

 cirri is as described tor E. Indlvisus ; indeed there" are many points 

 in a written description of the one species which would hold for 

 the other. However, in the new species the first two pinnules 

 have more massive joints than the third and fourth and are quite 

 as long, the second, indeed, being longer than the third. The other 

 striking point of difference is the granulation of the surface of 

 the basal joints of the arms. 



From the descriptions of Semper and P. H. Carpenter, bearing 

 in mind that thev had only one specimen and I only one, I 

 was inclined to regard the Macclesfield Bank specimen as belonging 

 to Semper's species ; but when I was, by the kindness of Mr. W. 

 Percy iSladen, enabled to put the new specimen side by side with 

 Semper's type, which is now in his possession, it was easy to see 

 that the two could not be united. 



The syzygial union of the first two brachials would of itself 

 separate £'.yr(:oiMZ«i«s from the three species described byCarpenter, 

 but they are, further, all much stouter than E. gruaulatus, though 

 the latter is itself very much stouter than E. imlivisus, which is 

 quite delicate. 



Of the latter. Dr. Herbert Carpenter says, " colour of skeleton 

 brownish white ; " it is now (January 1894) quite white ; in the 

 new species the ambulacral surface of the pinnules is a purplish 

 brown, the rest yellowish white. 



The single specimen, which is in fairly good condition, was 

 dredged at a depth of 34-40 fathoms off Macclesfield Bank. 



Antedox rxopiNATA, sp. nov. 



This species stands closest to the late Dr. Herbert Carpenter's 

 f/rnnnlifera-gvoup, but it is distinguished from both sections thereof 

 by having a syzygy in the third brachial. 



Centrodorsal large, hollowed in the centre, which is bare of 

 cirrus-pits ; the cirri in three irregular rows on the side, long and 

 stout, but not composed of so many as forty joints, variable in 

 length, and about forty-five in number; the terminal joints faintly 

 spinous. 



About forty-five arms, the joints of which are much compressed 

 from side to side. The first and second I'adials are wide and stout, 

 the third is short at the sides ; there are three distichals of which the 

 axillary is a syzygy ; the arms nearly always divide again, when there 

 are three palmars, of which the axillary is a syzygy ; in rare cases 

 there are also two post-palinars. The pinnules generally are 

 pretty stout and stitf, the basal one very markedly stout. There 

 is a syzygy on the third brachial, but not again for about twenty- 

 five joints ; the arm-joints are wide, low, and very regular. 



Colour, in spirit, light brown, the ambulacral surface of the 

 pinnules somewhat darker. 



