The Echinoderm Fauna of South Africa. 373 



77 fms. These records from the coast of Cape Colony do not seem 

 to me trustworthy though it cannot be denied that stragglers from 

 the Mozambique region may occur far down the coast. 



ECHINOTHRIX CALAMARIS. 



Echinus calamaris Pallas, 1774. Spic. Zool., vol. 1, fasc. 10, p. 31. 

 Echinuthrix calamaris Peters, 1853. Monatsb. Berlin Akad., p. 484. 



A fine, though small, specimen of this beautiful sea-urchin lies 

 before me, taken at Mozambique by Mr. Barnard. No satisfactory 

 figure has as yet been published of this remarkable echinoid. Leske, 

 (1778, Add. ad Klein, pi. XLV, figs. 1, 2) gives two recognizable 

 views and also (fig. 1 B) shows well one of the extraordinary pri- 

 mary spines, much enlarged. But a colored figure, taken from a 

 living specimen, is really necessary to give any fair idea of this, 

 perhaps the most lovely of sea-urchins. It has never been reported 

 from south of Mozambique but it is well-known throughout the 

 Indo-Pacific region. 



Dr. Rudmose Brown (1910, Proc. Roy. Phys. Soc. Edinburgh, vol. 

 XVIII, p. 38) records a small specimen of this species from the 

 Kerimba Islands as E. turcarum. The differences between the two 

 species of Echinothrix are by no means great and are evidently not 

 clear in Dr. Brown's mind. 



ASTROPYGA RADIATA. 



Cidaris radiata Leske, 1778. Add. ad Klein, p. 52. 

 Astropyga radiata Gray, 1825. Ann. Phil., vol. 26, p. 426. Peters, 

 1855. Seeigel von Mossambique, fig. 1 (as A, mossamUca). 



Although Bell says (1904, Mar. Inv. S. Afr., vol. 3, p. 169) that 

 Krauss long since collected this species at the Cape, I have no doubt 

 that the record is unreliable. Bell records young specimens from 

 four stations on the coast of Natal, north of 30' S. lat. and two of 

 these, about 15 mm. in diameter, from the South African Museum 

 are before me. There is no reason to question the identification, but 

 the fact that they were taken six and a half miles off shore at a 

 depth of 48 fms. seems to warrant the opinion that they are only 

 stragglers from the north. Tlie species is not in the PIETER FAURE 

 collection. It is well known however from Mozambique and Zanzibar. 



