I (K) 



Four young specimens procured as follows : — 



I,<pc;ilit\'. 



Dak 



How 1*1 iicurcd 



Depth. 



Ret". 



X.'>. 



This species was long- since collected at the Cape by Dr. 

 Krauss, although it does not seem to have been mentioned in any 



echinological list. 



ECHINOTHURIIDAE. 



For, I think, the first time Echinothuriae have been found 

 south of the Cape ; the family is, in this collection represented 

 by two specimens of Plwnnosoina, allied respectively to 

 P. tenite A. Ag. and P. Inirsariinn A. Ag. ; it is useless to at- 

 tempt to diagnose from isolated specimens, and the present con- 

 dition of the family does not warrant any addition to it that need 

 not be made ; it is to be hoped that the large collection made by 

 Professor Agassi/, will allow us to gain a definite idea of the 

 range and character of the variation exhibited by species, of 

 which as yet too few examples are known. It is on the basis 

 o^' such knowledge ratlier than on the distinction of minute 

 differences that satisfaclor)' systematics is bascnl. | Dr. Cilclirisl 

 has lately been so good as to send me a large series, which I shall 

 take an early opportunity of studying.] 



The specimens were obtained as follows : — 



ECHINIDAE. 



Echinus ang'ulosus. 



Cidaris angii/flsn, Leske, Addit. (1778), p. 92. 

 Echinus au^i^ii/osns, A. Ag., Rev. Echm (1872), p. 122, ihiqite 

 citata. 



