The Ecldnoderm Fauna of South Africa. 391 



"Revision" as occurring at Mozambique, Natal and Cape of Good 

 Hope. In the collection before me, there is a specimen from Mo- 

 zambique and one from Delagoa Bay. The former was taken in 

 November, 1912 by Mr. K. H. Barnard and is chiefly of interest be- 

 cause its ambitus is so nearly a circle; the long axis is 45 mm. and 

 the short one is only about 5 mm. shorter. The Delagoa Bay spe- 

 cimen, also taken by Mr. Barnard (October, 1912), is nearly the same 

 length (44 mm.) but its breadth is much less (35 mm.). 



The PIETER FAURE has not taken an Echinometra and I doubt 

 whether the species occurs regularly south of Delagoa Bay. The 

 records in the "Revision" are based on Museum material of con- 

 siderable age and the locality labels are not to be trusted implicitly. 



CLYPEASTERIDAE. 



The only published record of the occurrence of this family in South 

 Africa is my own statement (1914, Mem. M. C. Z., vol. 46, p. 29) 

 that there are specimens of Clypeaster audouini in the M. C. Z. col- 

 lection from Natal. Since that time, I have found a small Clypeaster, 

 also from Natal, in our collection, labelled Layanum decagonale, which 

 while clearly a Clypeaster is certainly not audouini. In the PIETER 

 FAURE collection are two tantalizing specimens of Clypeaster, which 

 can hardly be determined with certainty. One is a very young in- 

 dividual, which I am satisfied is identical with the small specimen 

 from Natal in the M. C. Z. ; I believe these young Clypeasters may 

 best be referred to the wide-spread Indo-Pacific species, C. humilis, 

 although they are really too young for certain identification. The 

 other PIETER FAURE specimen is a fragment of the lateral margin 

 of a large Clypeaster, which the coarse tuberculation shows is cer- 

 tainly neither audouini nor It urn ills. The fragment (P.F. 12557) is 

 nearly 80 mm. long and shows that the whole animal was about 

 140 mm. long. It is a somewhat waterworn fragment of a dead 

 test and was taken 11 miles off' Cape Natal in 180-200 fms. This 

 locality and depth, as well as the condition of the specimen, show 

 that it had undoubtedly come from farther north. The tuberculation 

 of the fragment is quite similar to that shown by large specimens of 

 reticulatus, but the individual from which it came was nearly twice 

 as large as any known specimen of reUculatus, fully adult specimens 

 of which are in the M. C. Z. "collection from Mauritius. It seems 

 probable that the PIETER FAURE fragment comes from a species as 

 yet unknown to science. 



