1900.] ME. P. P. BEDFORD ON MALAYAN ECHINODEBMS. 



Measurements. 



281 



5. Temnopletjktjs beynatjde Ag. (?). 



Temnopleurus reynaudi, Agassiz & Desor, Ann. Sc. Nat. (3) vi. 

 1846, p. 360. 



References. Alexander Agassiz, Revision of Echini, part 3, 1873. 

 H. Farquhar, Proc. Linn. Soc. X. S. W. xxiii. 1898, p. 318. 



Distribution. Ceylon, China Seas, and Xew Zealand. 



Locality. A single specimen only, in 6 fathoms on a bottom com- 

 posed of sandy mud off the west of Singapore Island, appears to 

 beloug to this species. 



Diameter 24 mm. ; height 13 mm. 



6. Salmacis sulcata Ag. (Plate XXII. fig. 3.) 



Salmacis sulcata, Agassiz & Desor, Ann. Sc. Nat. (3) vi. 1846, 

 p. 359. 



Salmacis globator, Alex. Agassiz (aot L. Ag.), Revision of 

 Echini, part 3, p. 473, 1872. 



Salmacis alexandri, Bell, Report of Zool. Coll. H.M.S. ' Alert,' 

 1884, p. 119. 



References. J. E. Tenison-Woods, Proc. Linn. Soc. X. S. W. iv. 



1878. F. J. Bell, Proc. Zool. Soc. 1880(S. globator a). P. J. 



Bell, Proc. Linn. Soc. N. S. W. ix. 1885. S. Loven, Bih. K. 



Sv. Vet.-Ak. Handl. Bd. 13, Afd. 4, JSo. 5, 1887. L. 



Doederlein, Zool. Jahrb., Abth. Syst. Bd. 3, 1888, p. 836. 



P. M. Duncan &W. P. Sladen, Journ. Linn. Soc, Zool. xxi. 



1888. H. Farquhar, Proc. Linn. Soc. X. S. W. xxiii. 1898. 



Locality Sf Habitat, vide S. globator, Bell. I believe that this 



species prefers a somewhat greater depth than S. globator (5-10 



fathoms), but in any case they are found together in about 5 



fathoms. A similar association together of two closely allied species 



of Echinoids within a limited area occurs in the case of Echinus 



esculeatus and Echinus acutus at Plymouth (v. E. J. Allen, Journ. 



M. B. A. Plymouth, vol.xv. no. 4, 1889, p. 473). In this latter case 



the " specific centre " of the two forms appears, from Mr, Allen's 



