AND ECHINOIDEA OF THE KOEEAN SEAS. 



411 



present state of our knowledge of the undeveloped stages of the 

 species of that group. It is certainly different from any described 

 Fihularia ; but, from the characters which it presents, I prefer to 

 regard it as a young and premature phase of growth, rather than 

 as a new species of that very unsatisfactory genus. 



EcHiNOLAMPAS oviFOEMis (Gmel), Gray. 

 1/88. Echinus oviformis, Gmelin, Linn. Syst. Nat. 3187. 

 1801. NucleoHtes oviformis, Lamarck, Anim. sans Vert. p. 347. 

 1816. Clypeaster oviformis, LamarcJc, Anim. sans Vert. p. 15. 

 . 1825. Echinolampas oviformis, Gray, Ann. Phil. x. p. 7, Cat. R. 

 Echinida, p. 35. 

 Echinolampas orientaUs, id. ibid. 



Coll. St. John: Korean Straits, W. coast of Nipon, lat.33°14'K, 

 long. 128° 55' E., 40 fathoms. 



The Echinolampas referred to the above species has a very ellip- 

 tical and distinctly ovoid contour when seen from above ; the test 

 is high and fully arched ; apex very eccentric anteriorly, and the 

 mouth in a somewhat more central position on the actinal surface ; 

 bourrelets moderately developed. Ambulacral petals slightly 

 petaloid, with poriferous zones unequally developed, the anterior 

 zones of the antero-lateral pair and the posterior zones of the 

 postero-lateral pair being little more than half the length of the 

 companion zone of the petal ; the inner pores are round, and the 

 outer ones somewhat larger and elongated, Tuberculation mo- 

 derately distant, and widely spaced in the neighbourhood of the 

 actinostome. Apical disk small, and the genital pores not very 

 wide apart. 



The following measurements will serve for comparison: — 

 Length 53 millims, breadth 44 millims., height 33 millims., ante- 

 rior margin to centre of apical disk 17 millims. 



EcHiFOCAEDiUM ArsTEALE, Gray. 



1851. Echinocardium australe, Gray, Ann. Sf Mag. Nat. Hist. 2nd ser, 

 vol. vii. p. 131^ et Cat. Echinida (1855), p. 44, pi. iv. fig. 1. 



1851. Echinocardium zealandicum, Gray, Ann. ^Mag. Nat. Hist. 2nd ser. 

 vol. vii. p. 131, et Cat. Echinida (1855), p. 44. 



1863. Echinocardium Stimpsoni, A. Agassiz, Proc. Acad. N. Sc. Phi' 

 ladel. p. 360. 



1869. Amphidetus novae-zealandise (Val.),Perrier, Rech. s. les Pedicell. 

 p. 176. 



Coll. St. John : lat. 33° 10' N., long. 129° 12' E., Korea, 36 

 fathoms. 



