shields were forming, in others the scaling was more advanced and the discs full size. They were so delicate that it was very difficult to handle them without breaking them to pieces, and when taken out of spirit the discs collapsed completely, as if they were only covered with skin, the scaling not being sufficiently formed to give any support. One or two of the arms of several specimens had also been broken off and were partially restored.

Amphiura rosea, sp. nov. Plate IX.

Disc small, slightly tumid, roundly subpentagonal in form, with constrictions in the interradial spaces, covered above and below with rather coarse, circular, overlapping, very irregular scales, among which the primaries can usually be made out; scaling on the interradial spaces below more regular and finer than above. Radial shields long and narrow, bluntly pointed within, meeting without (in some specimens they do not quite meet), separated within by a wedge of two or three long narrow scales; they do not reach the edge of the disc, but are separated from it by a few irregularly-shaped scales. Two short, stout, bluntly-pointed, rounded mouth-papillæ at the apex of the mouth-angle, and one short, stout, and bluntly-pointed on either side at the base of the mouth-angle. Five roundish, flattened teeth, the ends truncated or bevelled, the uppermost longest and divergent, the lowermost smallest and sometimes pointed, resembling a mouth-papilla. Mouth-shields rather large, circular in form, usually with a slight peak within; madreporic shield distinct, and a little larger than the others. Side mouth-shields trigonal, with re-entering curves, the longest angle within where they do not meet. Arms long, slender, and regularly tapering. Upper arm - plates transversely oval. First under arm-plate irregularly hexagonal, small, often indefinite in shape, those beyond pentagonal, a truncated angle within, and a slightly re-entering curve and rounded angles without. Side arm-plates with prominent spine-crest, meeting neither above nor below. Arm-spines rather slender, cylindrical, tapering, divergent, four sometimes five near the disc and three on the outer part of the arms, the two lower ones rather longer than the upper. Two very minute tentacle scales, one on the under arm-plate, the other on the side arm-plate, sometimes only one on the under arm-plate.

Colour in life often a generally-rosy red; sometimes the disc is grey or purplish-grey, and brownish towards the centre above. The arms are often grey or reddish-brown near the disc—this colour extends to a greater distance from the disc on some of the arms than on others even in the same specimen—and light-red or white beyond. In a number of speci-