ECHLN 01 DEA 0E THE MEEGUI AECHIPELAGO. 



317 



Perhaps the most interesting form in the collection, which is 

 not a characteristic Indian-Ocean species, is Araclinoides placenta. 

 The home of this Echinid is Australia and New Zealand; and, 

 with the exception of an example in the Boston Museum from 

 Burmah, mentioned by Alex. Agassiz, no other occurrence of the 

 species in the Indian Ocean proper is on record. 



Subclass EUECHINOIDEA, Bronn. 

 Order DIADEMATOIDA. 

 Suborder STEREO SO MAT A. 

 Family Temnopleueidji. 

 Subfamily Temnopleueikj;. 

 Genus Temnopleueijs, Agassiz. 



1. Temjtopletjetjs toeeumaticus {Klein), Agassiz. 

 Cidaris toreumatica, Klein, 1734, Nat. Disp. Echin. p. 22. 

 Temnopleurus toreumaticus, Agassiz, 1841, Monogr. Scutelles, p. 1 . 

 Locality. King Island (native name Radaw). 



G-enus Salmacis, Agassiz. 

 L Salmacis sulcata, Agassiz. 



Salmacis sulcata, Agassiz, 1846, Cat. Rais., Ann. Sci. Nat. vol. vi. 

 p. 359. 



Locality. King Island (native name Radaw) ; 25th Jan. 1882. 



Remarks. Test slightly conical, with large well-marked pits. 

 Spines rather short, those on the actinal surface a rich dark 

 purple or violet, but white at the base and occasionally at the 

 tip ; close to the peristome more white is present. Miliaries 

 and many secondaries altogether white. 



Colour of the test green, with a brighter or yellowish shade 

 along €he median areas of the ambulacral and interambulacral 

 areas. 



2. Salmacis Dussumieei, Agassiz. 



Salmacis Dussumieri, Agassiz, 1846, Cat. Rais., Ann. Sci. Nat. vol. vi. 

 p. 359. 



Locality. King Island (native name Radaw); 25th Jan. 1882. 



Remarks. Most of the specimens of this species known in 

 Museums are denuded of spines, The example under notice is 

 well preserved. The spines at the ambitus are remarkable for 

 their length and disproportionate size in relation to the otner 



