The Echinoderm Fauna of South Africa. 271 



either South Africa or the southern part of South America will 

 show some constant specific characters. Meanwhile it may be well 

 to record briefly the chief peculiarities of each of the PIETER FAURE 

 specimens. 



Specimen A. R = about 52 mm.; r = 21 mm.; R = '2-5 r; 

 br 21 mm. but at half-way point is only 11 mm. Disk large, 

 rather flat; rays tapering rapidly to an almost pointed tip. There 

 are no large spines on the abactinal surface but each of the larger 

 plates carries a big pedicellaria or a short spine or a high tubercle. 

 Supermarginal plates, each with one or interradially two rather 

 stout spines; on the interradial plates there are some large granules 

 in addition. Inferomarginals with a shorter and thicker spine and 

 2-10 coarse granules in addition ; the interradial plates have the 

 most granules. Actinal plates usually with a big central pedicellaria 

 and a marginal series of few very coarse granules; often a big 

 granule or two replaces the pedicellaria. Adambulacral armature 

 usually of a single large spine on the furrow margin, a similar but 

 shorter subambulacral spine and 3 or 4 granules on outer end of 

 plate; proximally there are 2 and rarely 3 spines on the margin, 

 but they are more slender, and compressed, and there is no conspi- 

 cuous subambulacral spine. Ural plates with only 4 or 5 marginal 

 spines, but they are big, somewhat compressed and blunt; there are 

 no big spines on the oral surface of plates. 



P.F. 2798. Vasco de Garna peak, N. 71 E., 18 miles. 230 fms. 

 Stones 1 specimen; young? 



Specimen B. R ;=. 50 mm.; r 25 mm.; R 2r; br 30 mm. 

 but at half-way point is 17 mm. Disk large, slightly tumid; rays 

 broad, rather flat, tapering uniformly to a blunt point. There are 

 no spines at all on the abactinal surface; many plates carry a pedi-. 

 cellaria or a single large granule at center but some are quite bare; 

 the result is an unusually smooth surface for a tttppastena. Super- 

 omarginal plates, each with a single, short thick spine; on the 

 interradial pair, a second shorter spine is below the first; on a few 

 plates a large granule accompanies the spine. Inferomarginals with 

 a single large tubercle or thick spinelet; interradially, several gra- 

 nules accompany this tubercle. Actinal plates as usual with a big 

 central pedicellaria or occasionally a large tubercle. Adambulacral 

 armature made up of a furrow series of two stout, bluntly pointed 

 spines, the aboral the larger, a very stout sugar-loaf shaped sub- 

 ambulacral spine with one or two granules adoral to it, and about 

 4 coarse, angular granules on the outer end of the plate. Oral 

 plates forming a rhomb, on each side of which are 3 stout spines ; 



