1900.] ME. F. P. BEDFORD ON MALAYAN ECHINODERMS. 



Measurements. 



281 



1. 



Diam. 



Height. 



Calyx. 



Peri- 

 stome. 



Longest 

 spine. 



Locality. 



Percentage value 



D = 100. 

 Longest spine. 



1163 



245 



15 





8-0 



28-5 



Malacca 



2. 



26 



15 





7-5 



32 





123-1 



3. 



34 



21 





100 



30 



; 



88-2 



*• 



35-5 



21-5 



8 



100 



33 



j» 



92-9 



5. 



10-5 



7 





4 



10 



Singapore 



95-2 



6. 



34 



21 





io-o 



21 



>> 



61-8 



7. 



37 



21-5 



7-5 



100 



21 



" 



56-8 



5. Temnopleuiitjs reynatjdi Ag. ('?). 



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

 1 846, p. 360. 



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

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



Distribution. Ceylon, China Seas, and New 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. tig. 3.) 



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

 p. 359. 



Salmacis globator, Alex. Agassiz (not 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. N. S. W. iv. 



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



Bell, Proc. Linn. Soc. N. S. W. ix. 1835. S. Loven, Bih. K. 



Sv. Vet.-Ak. Handl. Bd. 13, Afd. 4, No. 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. Earquhar, Proc. Linn. Soc. N. S. W. xxiii. 1898. 



Locality &f 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 



esculentus and Echinus acutus at Plymouth (v. E. J. Alleu, Journ. 



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



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



