428 Proceedings of the Royal Physical Society. 



Barrois). Spain (Coll. Norman). Mediterranean (Ludwig ; 

 Carus; Brifc. Mus.). United States Coast (Agassiz, 2). Bahia 

 (Mus. GodefFroy, ^(/e Agassiz, 2). 



25. Echinocardium pennatifidum, Norman. 



? 1857. Amphidotus gibbosus, Barrett, Ann. and Mag. Nat. Hist., (2) xix. 



p. 32, pi. vii., fig. 2 {nee Agassiz). 



1868, Eehinocardium pennatifidum, Norman, Last Eep. Shetland 



Dredgings, p, 315. 



1872. ,, ,, Hodge, Cat. Echin. Northumber- 



land and Durham, p, 142, pi. v., 

 figs. 1-5. 



1872. ,, ,, Agassiz, Kev. Echin., pp. Ill, 



351, pi. XX., figs. 1, 2. 



1886. ,, „ Bell, Ann. and Mag. Nat. Hist., 



(5) xvii,, pp. 516, 517. 



Diagnosis. 



Test having the general appearance of E. cordatiim^ owing to 

 the point of greatest elevation being posterior, though not so con- 

 spicuously as in that form ; the ambulacral areas are very slightly 

 depressed ; the deep anterior groove of E. cordatum being absent ; 

 in the antero-lateral petal, the anterior row has four to nine pairs, 

 the posterior thirteen or fourteen pairs of pores ; some of the 

 pedicellarise have jaws expanded towards the tip, round which 

 are six or more denticles. (This character suggested the specific 

 name.) 



Distribution. 



British Seas. — Shetland, S. of Bressay I., 25 fms. 1 (Barrett). 

 St Magnus Bay (Norman, 3). Ofif North Bona, "Knight 

 Errant," St. 3, 53 fms. (Agassiz, 4). Oflf Cumbrae (Robertson, 

 Jlde Henderson). Oif Holy I. (Brady, 2). Northumberland 

 and Durham (Hodge). Jersey (Bell, 2). Herm (Coll. Norman). 

 Scilly Is. (Brit. Mus. ; Coll. Norman). 



Other Localities. — West Indies and Florida, 79-121 fms. 

 ^Agassiz, 2). 



26. Echinocardium flavescens (O. F. Muller), Agassiz. 



1776. Spatagus flavescens, 0. F. Midler, Zool. Dan. Prodr., p, 236. 



1841. Amphidotus roseus, Forbes, Brit. Start., p. 194, cut. 



1844. ,, ovatus, Diiben & Koren, Skand. Echin., p. 283, 



pi. X., fig, 50. 

 1872. Echinocardium flavescens, Agassiz, Rev. Echin., pp. 110, 351, 



pi, XX., figs. 3, 4, 



