A Revised List of British Echinoidea. 427 



24. Echinocardium cordatum (Pennant), Gray. 

 1777. Eclunm cordatAis, Pennant, Brit. Zool., iv., p. .58, }>]. xxxiv., 



fiA^ 75. 

 1825. Echinocardium pusilliis^ Gray, Ann. Pliil., x., p. 430. 

 1825. .? Spatangus canaliferus, Foggo, Edin. Journ. 8ci., ii., p. 78. 

 1841. Amjiliidotus cordatus, Forbes, Brit. Sturf., p, 190, cut. 

 1848. Uchinocardiuvi ,, Gray, Brit. Bad, p. G. 

 1872. ,, cordntum, Agassiz, Bev. Echin., pp. 109, 349, 



pi. xix., figs. 10-17; pi. xx., ligs. 



5-7. 

 1874. ,, ,, Loven, lltudes, pi. i., figs. 2-7 ; pi. 



ill., fig. 38 (spheridia) ; pi. xii., 



fig. 107 (apex) ; pi. xxxix. (test). 



1883. ,, ■ ,, Loven, Pourtalesia, pi. viii., figs. 57, 



58; pi. xi., figs. 120-126 (pedicels); 

 pi. xii., fig, 148 (peripodium). 



1884. „ ,, Carus, Prodr. faun. Medit., p. 102. 



Diagnosis. 

 Test most elevated posteriorly ; dorsal ambulacra! depressions 

 deep ; dorsal impression ovate, pointed behind ; the posterior pore 

 row of the antero-lateral series and the anterior of the postero- 

 lateral form an even curve ; in the antero-lateral the anterior row 

 has six to nine pairs of pores, the posterior eleven or twelve; post- 

 oral spiniferous space broadly ovate. 



Distribution. 



British Seas. — " The commonest of all the Heart-Urchins. . . . 

 It abounds in all our sandy bays " (Forbes, 1). Shetland (Norman, 

 3). Off Sumburgh Head, 75 fms. (Pearcey). Rothesay (Grieve). 

 Cumbrae (Coll. Norman). Lamlash Bay (Herdman, 1). Firth 

 of Clyde, " common in sand at low water, and dredged in sandy 

 ground in shallower water" (Henderson). Aberdeenshire (Gregor 

 and Dawson). St Andrews (Brit. Mus.). Firth of Forth (Leslie 

 and Herdman; Foggo'?). Northumberland and Durham (Hodge; 

 Coll. Norman). Dublin Bay (Kinahan). Southport (Brit. Mus.). 

 Penmaenmawr to Southport, low water (Herdman, 3). Devon 

 (Parfitt). Mount's Bay (Tregelles). Scilly Is. (Coll. Norman; 

 Brit. Mus.). Ireland (Thompson, 2). Salcombe, Hastings (Coll. 

 Norman). Plymouth (Heape). Guernsey (Kgehler). 



Other Localities. — " Found throughout the seas of Eurojie " 

 (Forbes, 1). Norway (Sars ; Copenhagen Mus. ; M'ANDREWand 

 Barrett; Grieg; Coll. Norman). Denmark (Lutken; Copen- 

 hagen Mus.). Holland (Maitland ; Horst). France (Fischer ; 

 VOL. X. 2 F 



