580 ECHINOCARDIUM. 



ECHINOCARDIUM. 



Echinocardium Git ay, 1825, Ann. l'liil. (pars.) 

 (See Part II. p. 349.) 



Echinocardium australe 



: Echinocardium australe Gray, 1851, Ann. Mag. X. II., p. 131. \_P1- XXXVII. f. 15. 



Specimens of this species are readily distinguished from the Atlantic E. 

 cordatum, to which it is closely allied. Seen in profile the test rises some- 

 what more gradually from the anterior extremity towards the apical system ; 

 the abactinal pole is more central, and the anal system is elliptical, slightly 

 transverse, instead of being longitudinal, as in E. cordatum. The hare abac- 

 tinal posterior ambulacra! areas extend to the ambitus, remaining of the 

 same width, instead of becoming narrow, as in E. cordatum ; the pores of 

 the poriferous zones are more distant than in E. cordatum. 



.I:i|. an ; New Zealand : East India ; Cape "I Good Hope. 



Echinocardium cordatum 



Echinus cordatus 1'inn. 1 777. Brit Zo I.. IV. p. 58. 

 Echinocardium cordatum (Iisay. 1>|s. lint. Had. 

 (See Part II. p. ;nn.) 



PI. XIX f. io /; ; PL XX. f. ;, -? ; PI XXV. f. <r, as; PL XXXIII. f. g. 



Norway: Mediterranean; Brazil; Florida. 



Echinocardium flavescens 



Spatagus flavescens Mci.i. . 177i;. Prod., p. 2?<'t. 

 I Echinocardium flavescens A. Ac, 1872, Rev. Ech., I'l I. p. 110. 

 (See Part II. p. 851.) 



PL XX. f. 3-4; PL XXV. f. 86, 26'. 



Norway : South Carolina ; Florida. 



Echinocardium mediterraneum 



! Amphidetwt mediterraneus Forbes, 1S44. Jonrn. Lin. Soc. Loud. 

 I Echinocardium mediterraneum Gray, 1n.V>. Cat. Rec. Ech. 



PL XXV. f. 29 ; PL XXVI. f. w. 



Test high, flattened above, with deep sloping sides, as broad as long. The 

 anterior extremity is vertically truncated, with a shallow vertical groove ; the 



